Nuclear weapons and Israel
Encyclopedia
Israel
Israel
The State of Israel is a parliamentary republic located in the Middle East, along the eastern shore of the Mediterranean Sea...

 is widely believed to be the sixth country in the world to have developed nuclear weapons and to be one of four nuclear-armed countries not recognized as a Nuclear Weapons State by the Nuclear Non-Proliferation Treaty
Nuclear Non-Proliferation Treaty
The Treaty on the Non-Proliferation of Nuclear Weapons, commonly known as the Non-Proliferation Treaty or NPT, is a landmark international treaty whose objective is to prevent the spread of nuclear weapons and weapons technology, to promote cooperation in the peaceful uses of nuclear energy and to...

 (NPT), the others being India
India
India , officially the Republic of India , is a country in South Asia. It is the seventh-largest country by geographical area, the second-most populous country with over 1.2 billion people, and the most populous democracy in the world...

, Pakistan
Pakistan
Pakistan , officially the Islamic Republic of Pakistan is a sovereign state in South Asia. It has a coastline along the Arabian Sea and the Gulf of Oman in the south and is bordered by Afghanistan and Iran in the west, India in the east and China in the far northeast. In the north, Tajikistan...

 and North Korea
North Korea
The Democratic People’s Republic of Korea , , is a country in East Asia, occupying the northern half of the Korean Peninsula. Its capital and largest city is Pyongyang. The Korean Demilitarized Zone serves as the buffer zone between North Korea and South Korea...

. Former International Atomic Energy Agency
International Atomic Energy Agency
The International Atomic Energy Agency is an international organization that seeks to promote the peaceful use of nuclear energy, and to inhibit its use for any military purpose, including nuclear weapons. The IAEA was established as an autonomous organization on 29 July 1957...

 Director General Mohamed ElBaradei regarded Israel as a state possessing nuclear weapons, but Israel maintains a policy known as "nuclear ambiguity
Policy of deliberate ambiguity
A policy of deliberate ambiguity is the practice by a country of being intentionally ambiguous on certain aspects of its foreign policy or whether it possesses certain weapons of mass destruction...

" (also known as "nuclear opacity"). Israel has never officially admitted to having nuclear weapons, instead repeating over the years that it would not be the first country to "introduce" nuclear weapons to the Middle East
Middle East
The Middle East is a region that encompasses Western Asia and Northern Africa. It is often used as a synonym for Near East, in opposition to Far East...

, leaving ambiguity as to whether it means it will not create, will not disclose, will not make first use of the weapons or possibly some other interpretation of the phrase. The "not be the first" formulation goes back to before March 11 1965, when a cable from the US Embassy in Tel Aviv to Washington noted "The Government of Israel has reaffirmed that Israel will not be the first to introduce nuclear weapons into the Arab-Israel area." Israel has refused to sign the NPT despite international pressure to do so, and has stated that signing the NPT would be contrary to its national security interests.

Israel started investigating the nuclear field soon after its founding in 1948 and with French
France
The French Republic , The French Republic , The French Republic , (commonly known as France , is a unitary semi-presidential republic in Western Europe with several overseas territories and islands located on other continents and in the Indian, Pacific, and Atlantic oceans. Metropolitan France...

 support secretly began building a nuclear reactor
Nuclear reactor
A nuclear reactor is a device to initiate and control a sustained nuclear chain reaction. Most commonly they are used for generating electricity and for the propulsion of ships. Usually heat from nuclear fission is passed to a working fluid , which runs through turbines that power either ship's...

 and reprocessing plant
Nuclear reprocessing
Nuclear reprocessing technology was developed to chemically separate and recover fissionable plutonium from irradiated nuclear fuel. Reprocessing serves multiple purposes, whose relative importance has changed over time. Originally reprocessing was used solely to extract plutonium for producing...

 in the late 1950s. Although Israel first built a nuclear weapon in the late 1960s, it was not publicly confirmed from the inside until Mordechai Vanunu
Mordechai Vanunu
Mordechai Vanunu ; is a former Israeli nuclear technician who, citing his opposition to weapons of mass destruction, revealed details of Israel's nuclear weapons program to the British press in 1986. He was subsequently lured to Italy by a Mossad agent, where he was drugged and kidnapped by...

, a former Israeli nuclear technician, revealed details of the program to the British press in 1986.

Israel is currently believed to possess between 75 and 400 nuclear warheads with the ability to deliver them by intercontinental ballistic missile, aircraft
Aircraft
An aircraft is a vehicle that is able to fly by gaining support from the air, or, in general, the atmosphere of a planet. An aircraft counters the force of gravity by using either static lift or by using the dynamic lift of an airfoil, or in a few cases the downward thrust from jet engines.Although...

, and submarine
Submarine
A submarine is a watercraft capable of independent operation below the surface of the water. It differs from a submersible, which has more limited underwater capability...

.

Pre-Dimona 1949–1956

Israel first showed interest in procuring nuclear materials in 1949, when a unit of the Israel Defense Forces
Israel Defense Forces
The Israel Defense Forces , commonly known in Israel by the Hebrew acronym Tzahal , are the military forces of the State of Israel. They consist of the ground forces, air force and navy. It is the sole military wing of the Israeli security forces, and has no civilian jurisdiction within Israel...

 Science Corps, known by the Hebrew acronym HEMED GIMMEL, carried out a two year geological survey
Geological survey
The term geological survey can be used to describe both the conduct of a survey for geological purposes and an institution holding geological information....

 of the Negev
Negev
The Negev is a desert and semidesert region of southern Israel. The Arabs, including the native Bedouin population of the region, refer to the desert as al-Naqab. The origin of the word Neghebh is from the Hebrew root denoting 'dry'...

. While a preliminary study was initially prompted by rumors of petroleum
Petroleum
Petroleum or crude oil is a naturally occurring, flammable liquid consisting of a complex mixture of hydrocarbons of various molecular weights and other liquid organic compounds, that are found in geologic formations beneath the Earth's surface. Petroleum is recovered mostly through oil drilling...

 fields, one objective of the longer two year survey was to find sources of uranium
Uranium
Uranium is a silvery-white metallic chemical element in the actinide series of the periodic table, with atomic number 92. It is assigned the chemical symbol U. A uranium atom has 92 protons and 92 electrons, of which 6 are valence electrons...

; some small recoverable amounts were found in phosphate
Phosphate
A phosphate, an inorganic chemical, is a salt of phosphoric acid. In organic chemistry, a phosphate, or organophosphate, is an ester of phosphoric acid. Organic phosphates are important in biochemistry and biogeochemistry or ecology. Inorganic phosphates are mined to obtain phosphorus for use in...

 deposits. That same year, HEMED GIMMEL funded six Israeli physics graduate students to study overseas, including one to go to the University of Chicago
University of Chicago
The University of Chicago is a private research university in Chicago, Illinois, USA. It was founded by the American Baptist Education Society with a donation from oil magnate and philanthropist John D. Rockefeller and incorporated in 1890...

 and study under Enrico Fermi
Enrico Fermi
Enrico Fermi was an Italian-born, naturalized American physicist particularly known for his work on the development of the first nuclear reactor, Chicago Pile-1, and for his contributions to the development of quantum theory, nuclear and particle physics, and statistical mechanics...

, who had overseen the world's first artificial and self-sustaining nuclear chain reaction
Nuclear chain reaction
A nuclear chain reaction occurs when one nuclear reaction causes an average of one or more nuclear reactions, thus leading to a self-propagating number of these reactions. The specific nuclear reaction may be the fission of heavy isotopes or the fusion of light isotopes...

.

Israel's first Prime Minister
Prime Minister of Israel
The Prime Minister of Israel is the head of the Israeli government and the most powerful political figure in Israel . The prime minister is the country's chief executive. The official residence of the prime minister, Beit Rosh Hamemshala is in Jerusalem...

 David Ben Gurion was "nearly obsessed" with obtaining nuclear weapons to prevent The Holocaust
The Holocaust
The Holocaust , also known as the Shoah , was the genocide of approximately six million European Jews and millions of others during World War II, a programme of systematic state-sponsored murder by Nazi...

 from reoccurring. He stated, "What Einstein
Albert Einstein
Albert Einstein was a German-born theoretical physicist who developed the theory of general relativity, effecting a revolution in physics. For this achievement, Einstein is often regarded as the father of modern physics and one of the most prolific intellects in human history...

, Oppenheimer, and Teller
Edward Teller
Edward Teller was a Hungarian-American theoretical physicist, known colloquially as "the father of the hydrogen bomb," even though he did not care for the title. Teller made numerous contributions to nuclear and molecular physics, spectroscopy , and surface physics...

, the three of them are Jews
American Jews
American Jews, also known as Jewish Americans, are American citizens of the Jewish faith or Jewish ethnicity. The Jewish community in the United States is composed predominantly of Ashkenazi Jews who emigrated from Central and Eastern Europe, and their U.S.-born descendants...

, made for the United States
Manhattan Project
The Manhattan Project was a research and development program, led by the United States with participation from the United Kingdom and Canada, that produced the first atomic bomb during World War II. From 1942 to 1946, the project was under the direction of Major General Leslie Groves of the US Army...

, could also be done by scientists in Israel, for their own people". In early 1952 HEMED GIMMEL was moved from the IDF to the Ministry of Defense
Ministry of Defense (Israel)
The Ministry of Defence of the government of Israel, is the governmental department responsible for defending the State of Israel from internal and external military threats...

 and was reorganized as the Division of Research and Infrastructure (EMET). That June, Ernst David Bergmann
Ernst David Bergmann
Ernst David Bergmann was an Israeli nuclear scientist and chemist. He is often considered the father of the Israeli nuclear program.- Life and Education :...

, the chief of research at the Defense Ministry and Ben-Gurion's scientific advisor, was appointed by Ben-Gurion to be the first chairman of the Israel Atomic Energy Commission (IAEC).

HEMED GIMMEL was renamed Machon 4 during the transfer, and was used by Bergmann as the "chief laboratory" of the IAEC; by 1953, Machon 4, working with the Department of Isotope Research at the Weizmann Institute
Weizmann Institute of Science
The Weizmann Institute of Science , known as Machon Weizmann, is a university and research institute in Rehovot, Israel. It differs from other Israeli universities in that it offers only graduate and post-graduate studies in the sciences....

, developed the capability to extract uranium from the phosphate in the Negev and new technique to produce indigenous heavy water
Heavy water
Heavy water is water highly enriched in the hydrogen isotope deuterium; e.g., heavy water used in CANDU reactors is 99.75% enriched by hydrogen atom-fraction...

. Bergmann, who was interested in increasing nuclear cooperation with the French, sold both patents to the Commissariat à l'énergie atomique
Commissariat à l'Énergie Atomique
The Commissariat à l'énergie atomique et aux énergies alternatives or CEA, is a French “public establishment related to industrial and commercial activities” whose mission is to develop all applications of nuclear power, both civilian and military...

 (CEA) for 60 million francs. Although they were never commercialized, it was a consequential step for future French-Israeli cooperation. In addition, Israeli scientists probably helped construct the G-1 plutonium production reactor and UP-1 reprocessing plant at Marcoule
Marcoule
Marcoule Nuclear Site is a nuclear plant in the Chusclan and Codolet communes, near Bagnols-sur-Cèze in the Gard department of France, which is in the touristic, wine and agricultural Côtes-du-Rhône region...

. France and Israel had close relations in many areas. France was principal arms supplier for the young Jewish state, and as instability spread through French colonies in North Africa, Israel provided valuable intelligence obtained from contacts with Sephardi Jews in those countries.
At the same time Israeli scientists were also observing France's own nuclear program, and were the only foreign scientists allowed to roam "at will" at the nuclear facility at Marcoule.

After US President Dwight Eisenhower announced the Atoms for Peace
Atoms for Peace
"Atoms for Peace" was the title of a speech delivered by U.S. President Dwight D. Eisenhower to the UN General Assembly in New York City on December 8, 1953....

 initiative, Israel became the second country to sign on (following Turkey
Turkey
Turkey , known officially as the Republic of Turkey , is a Eurasian country located in Western Asia and in East Thrace in Southeastern Europe...

), and signed a peaceful nuclear cooperation agreement with the United States
United States
The United States of America is a federal constitutional republic comprising fifty states and a federal district...

 on 12 July 1955. This culminated in a public signing ceremony on 20 March 1957 to construct a "small swimming-pool research reactor in Nachal Soreq
Soreq Nuclear Research Center
The Soreq Nuclear Research Center is a research and development institute located near the localities of Palmachim and Yavne in Israel. It operates under the auspices of the Israel Atomic Energy Commission...

," which would be used to shroud the construction of a much larger facility with the French at Dimona
Dimona
Dimona is an Israeli city in the Negev desert, to the south of Beersheba and west of the Dead Sea above the Arava valley in the Southern District of Israel. Its population at the end of 2007 was 33,600.-History:...

.

Negotiation

The French justified their decision to provide Israel a nuclear reactor by claiming it was not without precedent. In September 1955 Canada
Canada
Canada is a North American country consisting of ten provinces and three territories. Located in the northern part of the continent, it extends from the Atlantic Ocean in the east to the Pacific Ocean in the west, and northward into the Arctic Ocean...

 publicly announced that it would help the India
India
India , officially the Republic of India , is a country in South Asia. It is the seventh-largest country by geographical area, the second-most populous country with over 1.2 billion people, and the most populous democracy in the world...

n government build a heavy-water research reactor, the CIRUS, for "peaceful purposes". When Egypt
Egypt
Egypt , officially the Arab Republic of Egypt, Arabic: , is a country mainly in North Africa, with the Sinai Peninsula forming a land bridge in Southwest Asia. Egypt is thus a transcontinental country, and a major power in Africa, the Mediterranean Basin, the Middle East and the Muslim world...

ian President Gamal Abdel Nasser
Gamal Abdel Nasser
Gamal Abdel Nasser Hussein was the second President of Egypt from 1956 until his death. A colonel in the Egyptian army, Nasser led the Egyptian Revolution of 1952 along with Muhammad Naguib, the first president, which overthrew the monarchy of Egypt and Sudan, and heralded a new period of...

 nationalized the Suez Canal
Suez Canal
The Suez Canal , also known by the nickname "The Highway to India", is an artificial sea-level waterway in Egypt, connecting the Mediterranean Sea and the Red Sea. Opened in November 1869 after 10 years of construction work, it allows water transportation between Europe and Asia without navigation...

, France proposed Israel attack Egypt and invade the Sinai as a pretext for France and Britain
United Kingdom
The United Kingdom of Great Britain and Northern IrelandIn the United Kingdom and Dependencies, other languages have been officially recognised as legitimate autochthonous languages under the European Charter for Regional or Minority Languages...

 to invade Egypt posing as "peacekeepers" with the true intent of seizing the Suez Canal (see Suez Crisis
Suez Crisis
The Suez Crisis, also referred to as the Tripartite Aggression, Suez War was an offensive war fought by France, the United Kingdom, and Israel against Egypt beginning on 29 October 1956. Less than a day after Israel invaded Egypt, Britain and France issued a joint ultimatum to Egypt and Israel,...

). In exchange, France would provide the nuclear reactor as the basis for the Israeli nuclear weapons program. Shimon Peres
Shimon Peres
GCMG is the ninth President of the State of Israel. Peres served twice as the eighth Prime Minister of Israel and once as Interim Prime Minister, and has been a member of 12 cabinets in a political career spanning over 66 years...

, sensing the opportunity on the nuclear reactor, accepted. On 17 September 1956, Peres and Bergmann reached a tentative agreement in Paris
Paris
Paris is the capital and largest city in France, situated on the river Seine, in northern France, at the heart of the Île-de-France region...

 for the CEA to sell Israel a small research reactor. This was reaffirmed by Peres at the Protocol of Sèvres
Protocol of Sèvres
The Protocol of Sèvres was a secret agreement reached between the governments of Israel, France and the United Kingdom during discussions held between 22 and 24 October 1956 at Sèvres, France...

 conference in late October for the sale of a reactor to be built near Dimona and for a supply of uranium fuel. After the Suez Crisis led to the threat of Soviet intervention and the British and French were being forced to withdraw under pressure from the US, Ben-Gurion sent Peres and Golda Meir
Golda Meir
Golda Meir ; May 3, 1898 – December 8, 1978) was a teacher, kibbutznik and politician who became the fourth Prime Minister of the State of Israel....

 to France. During their discussions the groundwork was laid for France to build a larger nuclear reactor and chemical reprocessing plant, and French Prime Minister Guy Mollet
Guy Mollet
Guy Mollet was a French Socialist politician. He led the French Section of the Workers' International party from 1946 to 1969 and was Prime Minister in 1956–1957.-Early life and World War II:...

, ashamed at having abandoned his commitment to fellow socialists in Israel, supposedly told an aide, "I owe the bomb to them."

This deal was finalized on 3 October 1957 in two agreements: one political that declared the project to be for peaceful purposes and specified other legal obligations, and one technical that described a 24 megawatt EL-102 reactor. The one to actually be built was to be two to three times as large and be able to produce 22 kilogram
Kilogram
The kilogram or kilogramme , also known as the kilo, is the base unit of mass in the International System of Units and is defined as being equal to the mass of the International Prototype Kilogram , which is almost exactly equal to the mass of one liter of water...

s of plutonium
Plutonium
Plutonium is a transuranic radioactive chemical element with the chemical symbol Pu and atomic number 94. It is an actinide metal of silvery-gray appearance that tarnishes when exposed to air, forming a dull coating when oxidized. The element normally exhibits six allotropes and four oxidation...

 a year.

Excavation

Before construction began it was determined that the scope of the project would be too large for the EMET and IAEC team, so Shimon Peres recruited Colonel Manes Pratt, then Israeli military attaché
Military attaché
A military attaché is a military expert who is attached to a diplomatic mission . This post is normally filled by a high-ranking military officer who retains the commission while serving in an embassy...

 in Burma, to be the project leader. Building began in late 1957 or early 1958, bringing hundreds of French engineers and technicians to the Beersheba
Beersheba
Beersheba is the largest city in the Negev desert of southern Israel. Often referred to as the "Capital of the Negev", it is the seventh-largest city in Israel with a population of 194,300....

 and Dimona area . In addition, thousands of newly immigrated Sephardic Jews were recruited to do digging; to circumvent strict labor laws, they were hired in increments of 59 days, separated by one day off.

Rupture with France

When Charles de Gaulle
Charles de Gaulle
Charles André Joseph Marie de Gaulle was a French general and statesman who led the Free French Forces during World War II. He later founded the French Fifth Republic in 1958 and served as its first President from 1959 to 1969....

 became French President in late 1958 he wanted to end French-Israeli nuclear cooperation, and said that he would not supply Israel with uranium unless the plant was opened to international inspectors, declared peaceful, and no plutonium was reprocessed. Through an extended series of negotiations, Shimon Peres finally reached a compromise with Foreign Minister Maurice Couve de Murville
Maurice Couve de Murville
Maurice Couve de Murville was a French diplomat and politician who was Minister of Foreign Affairs from 1958 to 1968 and Prime Minister from 1968 to 1969 under the presidency of General de Gaulle....

 over two years later, in which French companies would be able to continue to fulfill their contract obligations and Israel would declare the project peaceful. Due to this, French assistance did not end until 1966.

British aid

Top secret British
United Kingdom
The United Kingdom of Great Britain and Northern IrelandIn the United Kingdom and Dependencies, other languages have been officially recognised as legitimate autochthonous languages under the European Charter for Regional or Minority Languages...

 documents obtained by BBC
BBC
The British Broadcasting Corporation is a British public service broadcaster. Its headquarters is at Broadcasting House in the City of Westminster, London. It is the largest broadcaster in the world, with about 23,000 staff...

 Newsnight
Newsnight
Newsnight is a BBC Television current affairs programme noted for its in-depth analysis and often robust cross-examination of senior politicians. Jeremy Paxman has been its main presenter for over two decades....

 show that Britain made hundreds of secret shipments of restricted materials to Israel in the 1950s and 1960s. These included specialist chemicals for reprocessing and samples of fissile material—uranium-235
Uranium-235
- References :* .* DOE Fundamentals handbook: Nuclear Physics and Reactor theory , .* A piece of U-235 the size of a grain of rice can produce energy equal to that contained in three tons of coal or fourteen barrels of oil. -External links:* * * one of the earliest articles on U-235 for the...

 in 1959, and plutonium in 1966, as well as highly enriched lithium-6
Lithium
Lithium is a soft, silver-white metal that belongs to the alkali metal group of chemical elements. It is represented by the symbol Li, and it has the atomic number 3. Under standard conditions it is the lightest metal and the least dense solid element. Like all alkali metals, lithium is highly...

 which is used to boost fission bombs and fuel hydrogen bombs. The investigation also showed that Britain shipped 20 tons of heavy water
Heavy water
Heavy water is water highly enriched in the hydrogen isotope deuterium; e.g., heavy water used in CANDU reactors is 99.75% enriched by hydrogen atom-fraction...

 directly to Israel in 1959 and 1960 to start up the Dimona
Dimona
Dimona is an Israeli city in the Negev desert, to the south of Beersheba and west of the Dead Sea above the Arava valley in the Southern District of Israel. Its population at the end of 2007 was 33,600.-History:...

 reactor. The transaction was made through a Norwegian front company called Noratom which took a 2% commission on the transaction. Britain was challenged about the heavy water deal at the International Atomic Energy Agency after it was exposed on Newsnight in 2005. British Foreign Minister Kim Howells
Kim Howells
Kim Scott Howells is a British Labour Party politician, who was the Member of Parliament for Pontypridd from 1989 to 2010, and held a number of ministerial positions within the Government.-Biography:...

 claimed this was a sale to Norway
Norway
Norway , officially the Kingdom of Norway, is a Nordic unitary constitutional monarchy whose territory comprises the western portion of the Scandinavian Peninsula, Jan Mayen, and the Arctic archipelago of Svalbard and Bouvet Island. Norway has a total area of and a population of about 4.9 million...

. But a former British intelligence officer who investigated the deal at the time confirmed that this was really a sale to Israel and the Noratom contract was just a charade. The Foreign Office
Foreign and Commonwealth Office
The Foreign and Commonwealth Office, commonly called the Foreign Office or the FCO is a British government department responsible for promoting the interests of the United Kingdom overseas, created in 1968 by merging the Foreign Office and the Commonwealth Office.The head of the FCO is the...

 finally admitted in March 2006 that Britain knew the destination was Israel all along. Israel admits running the Dimona reactor with Norway's heavy water since 1963. French engineers who helped build Dimona say the Israelis were expert operators, so only a relatively small portion of the water were lost during the years past since the first operation of the reactor.

Criticality

In 1961, the Israeli Prime Minister David Ben-Gurion
David Ben-Gurion
' was the first Prime Minister of Israel.Ben-Gurion's passion for Zionism, which began early in life, led him to become a major Zionist leader and Executive Head of the World Zionist Organization in 1946...

 informed the Canadian Prime Minister John Diefenbaker
John Diefenbaker
John George Diefenbaker, PC, CH, QC was the 13th Prime Minister of Canada, serving from June 21, 1957, to April 22, 1963...

 that a pilot plutonium-separation plant would be built at Dimona. British intelligence concluded from this and other information that this "can only mean that Israel intends to produce nuclear weapons". The nuclear reactor at Dimona went critical
Critical mass
A critical mass is the smallest amount of fissile material needed for a sustained nuclear chain reaction. The critical mass of a fissionable material depends upon its nuclear properties A critical mass is the smallest amount of fissile material needed for a sustained nuclear chain reaction. The...

 in 1962. By 1965 the Israeli reprocessing plant was completed and ready to convert the reactor's fuel rods into weapons grade plutonium.

Costs

The exact cost for the construction of the Israeli nuclear program are unknown, though Peres later said that the reactor cost $80 million in 1960 dollars, half of which was raised by foreign Jewish donors, including many American Jews. Some of these donors were given a tour of the Dimona complex in 1968.

Weapons production 1967–present

Israel is believed to have begun full scale production of nuclear weapons following the 1967 Six-Day War
Six-Day War
The Six-Day War , also known as the June War, 1967 Arab-Israeli War, or Third Arab-Israeli War, was fought between June 5 and 10, 1967, by Israel and the neighboring states of Egypt , Jordan, and Syria...

, although it may have had bomb parts earlier. A CIA report from early 1967 stated that Israel had the materials to construct a bomb in six to eight weeks and some authors suggest that Israel had two crude bombs ready for use during the war. According to US journalist Seymour Hersh
Seymour Hersh
Seymour Myron Hersh is an American Pulitzer Prize-winning investigative journalist and author based in Washington, D.C. He is a regular contributor to The New Yorker magazine on military and security matters...

, everything was ready for production at this time save an official order to do so. Another CIA report from 1968 states that "(...) Israel might undertake a nuclear weapons program in the next several years." Moshe Dayan
Moshe Dayan
Moshe Dayan was an Israeli military leader and politician. The fourth Chief of Staff of the Israel Defense Forces , he became a fighting symbol to the world of the new State of Israel...

, then Defense Minister, believed that nuclear weapons were cheaper and more practical than indefinitely growing Israel's conventional forces. He convinced the Labor Party's economic boss Pinchas Sapir
Pinchas Sapir
Pinchas Sapir was an Israeli politician during the first three decades following the country's founding.He held two important ministerial posts, Minister of Finance and Minister of Trade and Industry as well as several other high-ranking governmental posts...

 of the value of commencing the program by giving him a tour of the Dimona site in early 1968, and soon after Dayan decided that he had the authority to order the start of full production of four to five nuclear warheads a year. Hersh stated that it is widely believed that the words "Never Again" were welded, in English and Hebrew, onto the first warhead.

In order to produce plutonium the Israelis needed a large supply of uranium ore
Uraninite
Uraninite is a radioactive, uranium-rich mineral and ore with a chemical composition that is largely UO2, but also contains UO3 and oxides of lead, thorium, and rare earth elements...

, some of which was procured by the Mossad
Mossad
The Mossad , short for HaMossad leModi'in uleTafkidim Meyuchadim , is the national intelligence agency of Israel....

 on the pretense of buying it for an Italian chemical company in Milan
Milan
Milan is the second-largest city in Italy and the capital city of the region of Lombardy and of the province of Milan. The city proper has a population of about 1.3 million, while its urban area, roughly coinciding with its administrative province and the bordering Province of Monza and Brianza ,...

. Once the uranium was shipped from Antwerp it was transferred to an Israeli freighter at sea and brought to Israel. The orchestrated disappearance of the uranium, named Operation Plumbat
Operation Plumbat
Operation Plumbat was an Israeli covert operation in 1968 to obtain yellowcake to support the Israeli nuclear weapons effort....

, became the subject of the 1978 book The Plumbat Affair.

Estimates as to how many warheads Israel has built since the late 1960s have varied, mainly based on the amount of fissile material that could have been produced and on the revelations of Israeli nuclear technician Mordechai Vanunu
Mordechai Vanunu
Mordechai Vanunu ; is a former Israeli nuclear technician who, citing his opposition to weapons of mass destruction, revealed details of Israel's nuclear weapons program to the British press in 1986. He was subsequently lured to Italy by a Mossad agent, where he was drugged and kidnapped by...

.

By 1969, U.S. Defense Secretary
United States Secretary of Defense
The Secretary of Defense is the head and chief executive officer of the Department of Defense of the United States of America. This position corresponds to what is generally known as a Defense Minister in other countries...

 Melvin Laird believed that Israel might have a nuclear weapon that year. Later that year, U.S. President
President of the United States
The President of the United States of America is the head of state and head of government of the United States. The president leads the executive branch of the federal government and is the commander-in-chief of the United States Armed Forces....

 Richard Nixon
Richard Nixon
Richard Milhous Nixon was the 37th President of the United States, serving from 1969 to 1974. The only president to resign the office, Nixon had previously served as a US representative and senator from California and as the 36th Vice President of the United States from 1953 to 1961 under...

 in a meeting with Israeli Prime Minister Golda Meir
Golda Meir
Golda Meir ; May 3, 1898 – December 8, 1978) was a teacher, kibbutznik and politician who became the fourth Prime Minister of the State of Israel....

 pressed Israel to "make no visible introduction of nuclear weapons or undertake a nuclear test program", so maintaining a policy of nuclear ambiguity. Before the Yom Kippur War Peres nonetheless wanted Israel to publicly demonstrate its nuclear capability to discourage an Arab attack, and fear of Israeli nuclear weapons may have discouraged Arab military strategy during the war from being as aggressive as it could have been.

The CIA believed that Israel's first bombs may have been made with highly enriched uranium stolen in the mid-1960s from the US Navy nuclear fuel plant operated by the Nuclear Materials and Equipment Corporation
The Apollo Affair
The Apollo Affair was a 1965 the incident in which a US company, Nuclear Materials and Equipment Corporation , in Apollo, Pennsylvania was investigated for losing 200-600 pounds of highly enriched uranium. In 1965, the FBI investigated Zalman Shapiro, the company's president, over the loss 200...

, where sloppy material accounting would have masked the theft.

By 1974 US intelligence believed Israel had stockpiled a small number of fission weapons, and by 1979 were perhaps in a position to test a more advanced small tactical nuclear weapon
Tactical nuclear weapon
A tactical nuclear weapon refers to a nuclear weapon which is designed to be used on a battlefield in military situations. This is as opposed to strategic nuclear weapons which are designed to menace large populations, to damage the enemy's ability to wage war, or for general deterrence...

 or thermonuclear weapon trigger design.

The CIA believed that the number of Israeli nuclear weapons stayed from 10 to 20 from 1974 until the early 1980s. Vanunu's information in October 1986 said that based on a reactor operating at 150 megawatts and a production of 40 kg of plutonium per year, Israel had 100 to 200 nuclear devices. Vanunu revealed that between 1980–1986 Israel attained the ability to build thermonuclear weapons. By the mid 2000s estimates of Israel's arsenal ranged from 75 to 400 nuclear warheads.

Several reports have surfaced claiming that Israel has some uranium enrichment capability at Dimona. Vanunu asserted that gas centrifuge
Gas centrifuge
A gas centrifuge is a device that performs isotope separation of gases. A centrifuge relies on the principles of centripetal force accelerating molecules so that particles of different masses are physically separated in a gradient along the radius of a rotating container.A prominent use of gas...

s were operating in Machon 8, and that a laser enrichment plant was being operated in Machon 9 (Israel holds a 1973 patent on laser isotope separation
Laser isotope separation
Laser isotope separation, or laser enrichment, is a technology of isotope separation using selective ionization of atoms or molecules by the means of precisely tuned lasers.The techniques are:* AVLIS, applied to atoms, and* MLIS, applied to molecules....

). According to Vanunu, the production-scale plant has been operating since 1979–80. The scale of a centrifuge operation would necessarily be limited due to space constraints. Laser isotope separation
Laser isotope separation
Laser isotope separation, or laser enrichment, is a technology of isotope separation using selective ionization of atoms or molecules by the means of precisely tuned lasers.The techniques are:* AVLIS, applied to atoms, and* MLIS, applied to molecules....

, however, if developed to operational status, could be quite compact. If highly enriched uranium is being produced in substantial quantities, then Israel's nuclear arsenal could be much larger than estimated solely from plutonium production.
Uranium enrichment could also be used to re-enrich reprocessed uranium
Reprocessed uranium
Reprocessed uranium is the uranium recovered from nuclear reprocessing, as done commercially in France, the UK and Japan and by nuclear weapons states' military plutonium production programs. This uranium actually makes up the bulk of the material separated during reprocessing...

 into reactor fuel to more efficiently use Israel's uranium supply.

In 1991 alone, as the Soviet Union dissolved, nearly 20 top Jewish Soviet scientists reportedly emigrated to Israel, some of whom had been involved in operating nuclear power plants and planning for the next generation of Soviet reactors. In September 1992, German intelligence was quoted in the press as estimating that 40 top Jewish Soviet nuclear scientists had emigrated to Israel since 1989.

In a 2010 interview Uzi Eilam, former head of the Israeli Atomic Energy Commission, told to the Israeli daily Maariv
Maariv
Maariv is a Hebrew language daily newspaper published in Israel. It is second in sales after Yedioth Ahronoth and third in readership after Yedioth Ahronoth and Israel HaYom. In a TGI survey comparing the last half of 2009 with the same period in 2008, Maariv saw its market share fall slightly...

 that the nuclear reactor in Dimona had been through extensive improvements and renovations and is now functioning as new, with no safety problems or hazard to the surrounding environment or the region.

Nuclear testing

Israel may have conducted an underground test in the Negev in 1963. On 2 November 1966, the country may have carried out a non-nuclear test, speculated to be zero yield or implosion in nature.

Vela Incident

On 22 September 1979, a US Vela satellite
Vela (satellite)
Vela was the name of a group of satellites developed as the Vela Hotel element of Project Vela by the United States to monitor compliance with the 1963 Partial Test Ban Treaty by the Soviet Union, and other nuclear-capable states. It means vigil or "watch" in Spanish.Vela started out as a small...

, built in the 1960s to detect nuclear tests, reported a flash resembling a nuclear detonation in the southern Indian Ocean
Indian Ocean
The Indian Ocean is the third largest of the world's oceanic divisions, covering approximately 20% of the water on the Earth's surface. It is bounded on the north by the Indian Subcontinent and Arabian Peninsula ; on the west by eastern Africa; on the east by Indochina, the Sunda Islands, and...

. The United States, under the Carter administration, initiated an investigation, and the United States' intelligence agencies concluded that the explosion was nuclear, and was a test conducted on an island controlled by South Africa. The intelligence community's estimate was that it was 90% likely to be a nuclear test and a secret study by the Nuclear Intelligence Panel agreed with that initial finding. However, the Carter administration then created a scientific panel led by MIT professor Jack Ruina
Jack Ruina
Jack P. Ruina was professor of electrical engineering at the Massachusetts Institute of Technology from 1963 until 1997 and currently is a professor emeritus at MIT...

, to analyze the reliability of the Vela detection; they concluded in July 1980 that the flash "was probably not from a nuclear explosion," Author Richard Rhodes
Richard Rhodes
Richard Lee Rhodes is an American journalist, historian, and author of both fiction and non-fiction , including the Pulitzer Prize-winning The Making of the Atomic Bomb , and most recently, The Twilight of the Bombs...

 asserts that the Carter administration was concerned about disrupting relations with South Africa, so the administration deliberately obscured their conclusions by putting forward a cover story that the flash was a result of natural causes. According to authors Richard Rhodes
Richard Rhodes
Richard Lee Rhodes is an American journalist, historian, and author of both fiction and non-fiction , including the Pulitzer Prize-winning The Making of the Atomic Bomb , and most recently, The Twilight of the Bombs...

 and Seymour Hersh
Seymour Hersh
Seymour Myron Hersh is an American Pulitzer Prize-winning investigative journalist and author based in Washington, D.C. He is a regular contributor to The New Yorker magazine on military and security matters...

, the explosion was a nuclear test conducted by Israel with the cooperation of South Africa. Hersch writes that the explosion was actually the third joint Israeli-South Africa
South Africa
The Republic of South Africa is a country in southern Africa. Located at the southern tip of Africa, it is divided into nine provinces, with of coastline on the Atlantic and Indian oceans...

n nuclear test in the Indian Ocean, and the Israelis had sent two IDF ships and "a contingent of Israeli military men and nuclear experts" for the test.

Dimona

The Israeli nuclear program was first revealed publicly on 13 December 1960 in a small Time
Time (magazine)
Time is an American news magazine. A European edition is published from London. Time Europe covers the Middle East, Africa and, since 2003, Latin America. An Asian edition is based in Hong Kong...

 article, which said that a non-Communist non-NATO country had made an "atomic development." On December 16, the Daily Express
Daily Express
The Daily Express switched from broadsheet to tabloid in 1977 and was bought by the construction company Trafalgar House in the same year. Its publishing company, Beaverbrook Newspapers, was renamed Express Newspapers...

 revealed this country to be Israel, and on December 18, US Atomic Energy Commission
United States Atomic Energy Commission
The United States Atomic Energy Commission was an agency of the United States government established after World War II by Congress to foster and control the peace time development of atomic science and technology. President Harry S...

 chairman John McCone
John McCone
John Alexander McCone was an American businessman and politician who served as Director of Central Intelligence during the height of the Cold War.- Background :...

 appeared on Meet the Press
Meet the Press
Meet the Press is a weekly American television news/interview program produced by NBC. It is the longest-running television series in American broadcasting history, despite bearing little resemblance to the original format of the program seen in its television debut on November 6, 1947. It has been...

 to officially confirm the Israeli construction of a nuclear reactor and announce his resignation. The following day The New York Times
The New York Times
The New York Times is an American daily newspaper founded and continuously published in New York City since 1851. The New York Times has won 106 Pulitzer Prizes, the most of any news organization...

, with the help of McCone, revealed that France was assisting Israel.

This flurry of media reporting led Ben-Gurion to make the only statement ever by an Israeli Prime Minister about Dimona. On December 21 he announced to the Knesset
Knesset
The Knesset is the unicameral legislature of Israel, located in Givat Ram, Jerusalem.-Role in Israeli Government :The legislative branch of the Israeli government, the Knesset passes all laws, elects the President and Prime Minister , approves the cabinet, and supervises the work of the government...

 that the government was building a 24 megawatt reactor "which will serve the needs of industry, agriculture, health, and science," and that it "is designed exclusively for peaceful purposes." However, Ernst David Bergmann
Ernst David Bergmann
Ernst David Bergmann was an Israeli nuclear scientist and chemist. He is often considered the father of the Israeli nuclear program.- Life and Education :...

, chairman of the Israel Atomic Energy Commission from 1954 to 1966, said that "There is no distinction between nuclear energy for peaceful purposes or warlike ones" and that "We shall never again be led as lambs to the slaughter".

Weapons production

The first public revelation of Israel's nuclear capability (as opposed to development program) came from NBC News
NBC News
NBC News is the news division of American television network NBC. It first started broadcasting in February 21, 1940. NBC Nightly News has aired from Studio 3B, located on floors 3 of the NBC Studios is the headquarters of the GE Building forms the centerpiece of 30th Rockefeller Center it is...

, which reported in January 1969 that Israel decided "to embark on a crash course program to produce a nuclear weapon" two years previously, and that they possessed or would soon be in possession of such a device. This was initially dismissed by Israeli and US officials, as well as in an article in The New York Times. Just one year later on July 18, The New York Times made public for the first time that the US government believed Israel to possess nuclear weapons or to have the "capacity to assemble atomic bombs on short notice." Israel reportedly assembled 13 bombs during the Yom Kippur War
Yom Kippur War
The Yom Kippur War, Ramadan War or October War , also known as the 1973 Arab-Israeli War and the Fourth Arab-Israeli War, was fought from October 6 to 25, 1973, between Israel and a coalition of Arab states led by Egypt and Syria...

 as a last defense against total defeat, and kept them usable after the war.

The first extensive details of the weapons program came in the London
London
London is the capital city of :England and the :United Kingdom, the largest metropolitan area in the United Kingdom, and the largest urban zone in the European Union by most measures. Located on the River Thames, London has been a major settlement for two millennia, its history going back to its...

 based Sunday Times
The Sunday Times (UK)
The Sunday Times is a Sunday broadsheet newspaper, distributed in the United Kingdom. The Sunday Times is published by Times Newspapers Ltd, a subsidiary of News International, which is in turn owned by News Corporation. Times Newspapers also owns The Times, but the two papers were founded...

 on 5 October 1986, which printed information provided by Mordechai Vanunu
Mordechai Vanunu
Mordechai Vanunu ; is a former Israeli nuclear technician who, citing his opposition to weapons of mass destruction, revealed details of Israel's nuclear weapons program to the British press in 1986. He was subsequently lured to Italy by a Mossad agent, where he was drugged and kidnapped by...

, a technician formerly employed at the Negev Nuclear Research Center
Negev Nuclear Research Center
The Negev Nuclear Research Center is an Israeli nuclear installation located in the Negev desert, about thirteen kilometers to the south-east of the city of Dimona. The purpose of Dimona is widely assumed to be the manufacturing of nuclear weapons, and the majority of defense experts have...

 near Dimona
Dimona
Dimona is an Israeli city in the Negev desert, to the south of Beersheba and west of the Dead Sea above the Arava valley in the Southern District of Israel. Its population at the end of 2007 was 33,600.-History:...

. For publication of state secrets Vanunu was kidnapped by the Mossad
Mossad
The Mossad , short for HaMossad leModi'in uleTafkidim Meyuchadim , is the national intelligence agency of Israel....

 in Rome
Rome
Rome is the capital of Italy and the country's largest and most populated city and comune, with over 2.7 million residents in . The city is located in the central-western portion of the Italian Peninsula, on the Tiber River within the Lazio region of Italy.Rome's history spans two and a half...

, brought back to Israel, and sentenced to 18 years in prison for treason
Treason
In law, treason is the crime that covers some of the more extreme acts against one's sovereign or nation. Historically, treason also covered the murder of specific social superiors, such as the murder of a husband by his wife. Treason against the king was known as high treason and treason against a...

 and espionage
Espionage
Espionage or spying involves an individual obtaining information that is considered secret or confidential without the permission of the holder of the information. Espionage is inherently clandestine, lest the legitimate holder of the information change plans or take other countermeasures once it...

. Although there had been much speculation prior to Vanunu's revelations that the Dimona site was creating nuclear weapons, Vanunu's information indicated that Israel had also built thermonuclear weapons.

South African documents

In 2010, The Guardian
The Guardian
The Guardian, formerly known as The Manchester Guardian , is a British national daily newspaper in the Berliner format...

 released South African government documents that it alleged confirmed the existence of Israel's nuclear arsenal. According to the newspaper, the documents are minutes taken by the South African side of alleged meetings between senior officials from the two countries in 1975. The Guardian alleged that these documents reveal that Israel had offered to sell South Africa nuclear weapons that year. The documents appeared to confirm information disclosed by a former South African naval commander, who said there was an agreement between Israel and South Africa which involved an offer by Israel to arm eight Jericho missiles with atomic bombs.
Waldo Stumpf—who led a project to dismantle South Africa's nuclear weapons program
South Africa and weapons of mass destruction
From the 1960s to the 1980s, South Africa pursued research into weapons of mass destruction, including nuclear, biological, and chemical weapons. Six nuclear weapons were assembled...

—doubted Israel or South Africa would have contemplated a deal seriously, saying that Israel could not have offered to sell nuclear warheads to his country due to the serious international complications that such a deal could have. Shimon Peres
Shimon Peres
GCMG is the ninth President of the State of Israel. Peres served twice as the eighth Prime Minister of Israel and once as Interim Prime Minister, and has been a member of 12 cabinets in a political career spanning over 66 years...

, now Israeli President and then defence minister, has officially rejected the newspaper's claim that the alleged negotiations took place. He also asserted that The Guardians conclusions were "based on the selective interpretation of South African documents and not on concrete facts."

Avner Cohen, author of Israel and the Bomb and the forthcoming The Worst-Kept Secret: Israel's Bargain with the Bomb, said "Nothing in the documents suggests there was an actual offer by Israel to sell nuclear weapons to the regime in Pretoria
Pretoria
Pretoria is a city located in the northern part of Gauteng Province, South Africa. It is one of the country's three capital cities, serving as the executive and de facto national capital; the others are Cape Town, the legislative capital, and Bloemfontein, the judicial capital.Pretoria is...

."

Stockpile

The State of Israel has never made public any details of its nuclear capability or arsenal. The following is a history of estimates by many different reputable sources on the size and strength of Israel's nuclear arsenal. Estimates may vary due to the amount of material Israel has on store versus assembled weapons, and estimates as to how much material the weapons actually use, as well as the overall time in which the reactor was operated. Israel nuclear might is commonly estimated as moving between 200 to 400 warheads, equivalent to almost four thousand Hiroshima-type bombs.
  • 1967 (Six Day War)- 2 bombs; 13 bombs

  • 1969– 5–6 bombs of 19 kilotons yield each

  • 1973 (Yom Kippur War
    Yom Kippur War
    The Yom Kippur War, Ramadan War or October War , also known as the 1973 Arab-Israeli War and the Fourth Arab-Israeli War, was fought from October 6 to 25, 1973, between Israel and a coalition of Arab states led by Egypt and Syria...

    )- 13 bombs; 20 nuclear missiles plus developed a suitcase bomb
    Suitcase bomb
    A suitcase nuke is a tactical nuclear weapon which uses, or is portable enough that it could use, a suitcase as its delivery method. Synonyms include suitcase bomb, backpack nuke, mini-nuke, pocket nuke and snuke....


  • 1974– 3 capable artillery battalions each with 12 175 mm tubes and a total of 108 warhead
    Warhead
    The term warhead refers to the explosive material and detonator that is delivered by a missile, rocket, or torpedo.- Etymology :During the early development of naval torpedoes, they could be equipped with an inert payload that was intended for use during training, test firing and exercises. This...

    s; 10 bombs

  • 1976– 10–20 nuclear weapons

  • 1980– 100–200 bombs

  • 1984– 12–31 atomic bombs; 31 plutonium bombs and 10 uranium bombs

  • 1985– at least 100 nuclear bombs

  • 1986– 100 to 200 fission bombs and a number of fusion bombs

  • 1991– 50–60 to 200–300

  • 1992– more than 200 bombs

  • 1994– 64–112 bombs (5 kg/warhead); 50 nuclear tipped Jericho missile
    Jericho missile
    Jericho is a general designation given to the Israeli ballistic missiles. The name is taken from the first development contract signed between Israel and Dassault in 1963, with the codename as a reference to the Biblical city of Jericho...

    s, 200 total

  • 1995– 66–116 bombs (at 5 kg/warhead); 70–80 bombs; "A complete Repertoire" (neutron bomb
    Neutron bomb
    A neutron bomb or enhanced radiation weapon or weapon of reinforced radiation is a type of thermonuclear weapon designed specifically to release a large portion of its energy as energetic neutron radiation rather than explosive energy...

    s, nuclear mines, suitcase bomb
    Suitcase bomb
    A suitcase nuke is a tactical nuclear weapon which uses, or is portable enough that it could use, a suitcase as its delivery method. Synonyms include suitcase bomb, backpack nuke, mini-nuke, pocket nuke and snuke....

    s, submarine-borne)

  • 1996– 60–80 plutonium weapons, maybe more than 100 assembled, ER variants, varitable yields

  • 1997– More than 400 deliverable thermonuclear and nuclear weapons

  • 2002– Between 75 and 200 weapons

  • 2004– 82

  • 2006– Federation of American Scientists
    Federation of American Scientists
    The Federation of American Scientists is a nonpartisan, 501 organization intent on using science and scientific analysis to attempt make the world more secure. FAS was founded in 1945 by scientists who worked on the Manhattan Project to develop the first atomic bombs...

     believes that Israel "could have produced enough plutonium for at least 100 nuclear weapons, but probably not significantly more than 200 weapons".

  • 2008– 150 or more nuclear weapons.
  • 2008– 80 intact warheads, of which 50 are re-entry vehicles for delivery by ballistic missile
    Ballistic missile
    A ballistic missile is a missile that follows a sub-orbital ballistic flightpath with the objective of delivering one or more warheads to a predetermined target. The missile is only guided during the relatively brief initial powered phase of flight and its course is subsequently governed by the...

    s and the rest bombs for delivery by aircraft. Total military plutonium stockpile 340–560 kg.
  • 2009– Estimates of weapon numbers differ sharply with plausible estimates varying from 60 to 400.
  • 2010– According to Jane's Defense Weekly Israel has between 100 and 300 nuclear warheads, most of them are probably being kept in unassembled mode but can become fully functional "in a matter of days".
  • 2010– "[M]ore than 100 weapons, mainly two-stage thermonuclear devices, capable of being delivered by missile, fighter-bomber, or submarine"

Delivery systems

Israeli military forces possess land, air, and sea based methods for deploying their nuclear weapons, thus forming nuclear triad
Nuclear triad
A nuclear triad refers to a nuclear arsenal which consists of three components, traditionally strategic bombers, ICBMs and SLBMs. The purpose of having a three-branched nuclear capability is to significantly reduce the possibility that an enemy could destroy all of a nation's nuclear forces in a...

 that is mainly medium to long ranged, the backbone of which is submarine launched cruise missile
Cruise missile
A cruise missile is a guided missile that carries an explosive payload and is propelled, usually by a jet engine, towards a land-based or sea-based target. Cruise missiles are designed to deliver a large warhead over long distances with high accuracy...

s and medium and intercontinental ballistic missile
Intercontinental ballistic missile
An intercontinental ballistic missile is a ballistic missile with a long range typically designed for nuclear weapons delivery...

s, with Israeli Air Force
Israeli Air Force
The Israeli Air Force is the air force of the State of Israel and the aerial arm of the Israel Defense Forces. It was founded on May 28, 1948, shortly after the Israeli Declaration of Independence...

 tactical aircraft fulfilling the role normally played by strategic bombers in the Russian and American strategic deterrent. During 2008 the Jericho III
Jericho missile
Jericho is a general designation given to the Israeli ballistic missiles. The name is taken from the first development contract signed between Israel and Dassault in 1963, with the codename as a reference to the Biblical city of Jericho...

 ICBM became operational, giving Israel extremely long range nuclear strike abilities.

Missiles

Israel is believed to have second-strike abilities in the form of its submarines fleet and its nuclear-capable ballistic missiles, which are buried so far underground they would survive a nuclear strike. Ernst David Bergmann
Ernst David Bergmann
Ernst David Bergmann was an Israeli nuclear scientist and chemist. He is often considered the father of the Israeli nuclear program.- Life and Education :...

 was the first to seriously begin thinking about ballistic missile
Ballistic missile
A ballistic missile is a missile that follows a sub-orbital ballistic flightpath with the objective of delivering one or more warheads to a predetermined target. The missile is only guided during the relatively brief initial powered phase of flight and its course is subsequently governed by the...

 capability and Israel test-fired its first Shavit
Shavit
Shavit is a space launch vehicle produced by Israel to launch small satellites into low earth orbit. It was first launched on September 19, 1988 , making Israel the eighth country to have a space launch capability after the USSR, United States, France, Japan, People's Republic of China, United...

 II missile in July 1961. It was not until 1963 when Israel actually put a large-scale project into motion, spending $100 million to jointly develop and build 25 short-range missiles
Short-range ballistic missile
A short-range ballistic missile is a ballistic missile with a range of about 1,000 km or less. They are usually capable of carrying nuclear weapons. In potential regional conflicts, these missiles would be used because of the short distances between some countries and their relative low cost...

 with the French aerospace company Dassault
Dassault Aviation
Dassault Aviation is a French aircraft manufacturer of military, regional and business jets, a subsidiary of Dassault Group.It was founded in 1930 by Marcel Bloch as Société des Avions Marcel Bloch or "MB". After World War II, Marcel Bloch changed his name to Marcel Dassault, and the name of the...

. The Israeli project, codenamed Project 700, also included the construction of a missile field at Hirbat Zacharia
Sedot Mikha Airbase
Sdot Micha is an Israeli Air Force base located near Zekharia. It is believed that the base is a rocket launch site for Jericho 1 and Jericho 2 missiles.-Units:*158 Squadron Jericho IRBM*197 Squadron Jericho IRBM...

, a site west of Jerusalem. The missiles that were first developed with France became the Jericho I system, first operational in 1971. It is possible that the Jericho I was removed from operational service during the 1990s. In the mid 1980s the Jericho II medium-range missile
Medium-range ballistic missile
A medium-range ballistic missile , is a type of ballistic missile with medium range, this last classification depending on the standards of certain organizations. Within the U.S. Department of Defense, a medium range missile is defined by having a maximum range of between 1,000 and 3,000 km1...

, which is believed to have a range of 2800–5000 km, entered service. It is believed that Jericho II is capable of delivering nuclear weapons with a superior degree of accuracy. The Shavit
Shavit
Shavit is a space launch vehicle produced by Israel to launch small satellites into low earth orbit. It was first launched on September 19, 1988 , making Israel the eighth country to have a space launch capability after the USSR, United States, France, Japan, People's Republic of China, United...

 three stages solid fuel space launch vehicle produced by Israel to launch many of its satellites into low earth orbit since 1988 is actually a civilian version of the Jericho II. The Jericho III ICBM, became operational in January 2008 and some reports speculate that the missile may be able to carry MIRVed
Multiple independently targetable reentry vehicle
A multiple independently targetable reentry vehicle warhead is a collection of nuclear weapons carried on a single intercontinental ballistic missile or a submarine-launched ballistic missile . Using a MIRV warhead, a single launched missile can strike several targets, or fewer targets redundantly...

 warheads. The maximum range estimation of the Jericho III is 11,500 km with a payload of 1000–1300 kg (up to six small nuclear warheads of 100 kt each or one 1 megaton nuclear warhead), and its accuracy is considered high. In January 2008 Israel has carried out the successful test launch of a long-range, ballistic missile capable of carrying a nuclear warhead from the reported launch site at the Palmachim air base
Palmachim
Palmachim is a kibbutz in central Israel. Located about ten kilometers south of the Tel Aviv area along the coast of the Mediterranean Sea, among the sand dunes, it falls under the jurisdiction of Gan Raveh Regional Council...

 south of Tel Aviv. Israeli radio identified the missile as a Jericho III and the Hebrew YNet
Ynet
Ynet is the most popular Israeli news and general content website. It is owned by the same conglomerate that operates Yediot Ahronot, the country's secondleading daily newspaper...

 news Web site quoted unnamed defence officials as saying the test had been "dramatic" and that the new missile can reach "extremely long distances," without elaborating. Soon after the successful test launch, Isaac Ben-Israel, a retired army general and Tel Aviv University
Tel Aviv University
Tel Aviv University is a public university located in Ramat Aviv, Tel Aviv, Israel. With nearly 30,000 students, TAU is Israel's largest university.-History:...

 professor who is now an MP, told Israeli Channel 2 TV:
"Everybody can do the math and understand that the significance is that we can reach with a rocket engine to every point in the world"


The test came two days after Ehud Olmert
Ehud Olmert
Ehud Olmert is an Israeli politician and lawyer. He served as Prime Minister of Israel from 2006 to 2009, as a Cabinet Minister from 1988 to 1992 and from 2003 to 2006, and as Mayor of Jerusalem from 1993 to 2003....

, then Israel's Prime Minister, warned that "all options were on the table to prevent Tehran from acquiring nuclear weapons" and few months after Israel bombed Syrian facility that was suspected as nuclear plant, built with extensive help from North Korea. At the same time, regional defence experts said that by the beginning of 2008 Israel has already launched a programme to extend the range of its existing Jericho II ground attack missiles. The Jericho-II B missile is capable of sending a one ton nuclear payload 5,000 kilometers. The range of Israels' Jericho II B missiles is reportedly capable of being modified to carry nuclear warheads no heavier than 500 kg over 7,800 km, making it an ICBM. It is estimated that Israel has between 50 and 100 Jericho II B missiles based at facilities which were built in the 1980s. However, the number of Jericho III missiles that Israel possesses is unknown.

Aircraft

Israel lacks strategic bomber
Strategic bomber
A strategic bomber is a heavy bomber aircraft designed to drop large amounts of ordnance onto a distant target for the purposes of debilitating an enemy's capacity to wage war. Unlike tactical bombers, which are used in the battle zone to attack troops and military equipment, strategic bombers are...

s to deliver nuclear weapons over a long-range, although its F-16
F-16 Fighting Falcon
The General Dynamics F-16 Fighting Falcon is a multirole jet fighter aircraft originally developed by General Dynamics for the United States Air Force . Designed as an air superiority day fighter, it evolved into a successful all-weather multirole aircraft. Over 4,400 aircraft have been built since...

 fighter aircraft have been cited as possible nuclear delivery systems. The U.S. Air Force F-15
F-15 Eagle
The McDonnell Douglas F-15 Eagle is a twin-engine, all-weather tactical fighter designed by McDonnell Douglas to gain and maintain air superiority in aerial combat. It is considered among the most successful modern fighters with over 100 aerial combat victories with no losses in dogfights...

 has tactical nuclear weapon capability.

Present

The Israeli Air Force possesses the following types of strike fighters:
  • Lockheed Martin
    Lockheed Martin
    Lockheed Martin is an American global aerospace, defense, security, and advanced technology company with worldwide interests. It was formed by the merger of Lockheed Corporation with Martin Marietta in March 1995. It is headquartered in Bethesda, Maryland, in the Washington Metropolitan Area....

     F-16I Sufa
    F-16 Fighting Falcon
    The General Dynamics F-16 Fighting Falcon is a multirole jet fighter aircraft originally developed by General Dynamics for the United States Air Force . Designed as an air superiority day fighter, it evolved into a successful all-weather multirole aircraft. Over 4,400 aircraft have been built since...

     ("Storm")
  • McDonnell Douglas
    McDonnell Douglas
    McDonnell Douglas was a major American aerospace manufacturer and defense contractor, producing a number of famous commercial and military aircraft. It formed from a merger of McDonnell Aircraft and Douglas Aircraft in 1967. McDonnell Douglas was based at Lambert-St. Louis International Airport...

    /Boeing
    Boeing
    The Boeing Company is an American multinational aerospace and defense corporation, founded in 1916 by William E. Boeing in Seattle, Washington. Boeing has expanded over the years, merging with McDonnell Douglas in 1997. Boeing Corporate headquarters has been in Chicago, Illinois since 2001...

     F-15I Ra'am
    F-15E Strike Eagle
    The McDonnell Douglas F-15E Strike Eagle is an all-weather multirole fighter, derived from the McDonnell Douglas F-15 Eagle. The F-15E was designed in the 1980s for long-range, high speed interdiction without relying on escort or electronic warfare aircraft. United States Air Force F-15E Strike...

     ("Thunder")

Marine

The Israeli Navy operates modern German
Germany
Germany , officially the Federal Republic of Germany , is a federal parliamentary republic in Europe. The country consists of 16 states while the capital and largest city is Berlin. Germany covers an area of 357,021 km2 and has a largely temperate seasonal climate...

-built Dolphin-class submarine
Dolphin class submarine
The Type 800 Dolphin class is a diesel-electric submarine developed and constructed by Howaldtswerke-Deutsche Werft AG , Germany for the Israeli Navy. It is based on the export-only German 209 class submarines, but modified and reduced and is thus not seen as a member of the 209 family...

s. First three Dolphins were delivered to Israel in 1999 and replaced the aging Gal class submarine
Gal class submarine
The Type 540 Gal Class submarine is a slightly modified variant of the German HDW Type 206 submarine class , modified for Israeli requirements. The Gal class submarines were built to Israeli specifications as the Vickers shipyards Type 540 at Barrow in Furness in the UK rather than Germany for...

s, which had served in the Israeli navy since the late-1970s. Various reports indicate that these submarine
Submarine
A submarine is a watercraft capable of independent operation below the surface of the water. It differs from a submersible, which has more limited underwater capability...

s are equipped with Popeye Turbo cruise missiles that can deliver nuclear warheads with extremely high accuracy. The proven effectiveness of cruise missiles of its own production may have been behind Israel’s recent acquisition of these submarines which are equipped with torpedo tubes suitable for launching long-range (1500–2400 km) nuclear-capable cruise missiles that would offer Israel a second strike
Second strike
In nuclear strategy, a second strike capability is a country's assured ability to respond to a nuclear attack with powerful nuclear retaliation against the attacker...

 capability. Israel is reported to possess a 200 kg nuclear warhead, containing 6 kg of plutonium, that could be mounted on cruise missiles. The missiles were reportedly test launched in the Indian Ocean
Indian Ocean
The Indian Ocean is the third largest of the world's oceanic divisions, covering approximately 20% of the water on the Earth's surface. It is bounded on the north by the Indian Subcontinent and Arabian Peninsula ; on the west by eastern Africa; on the east by Indochina, the Sunda Islands, and...

 near Sri Lanka
Sri Lanka
Sri Lanka, officially the Democratic Socialist Republic of Sri Lanka is a country off the southern coast of the Indian subcontinent. Known until 1972 as Ceylon , Sri Lanka is an island surrounded by the Indian Ocean, the Gulf of Mannar and the Palk Strait, and lies in the vicinity of India and the...

 in June 2000, and are reported to have hit their target at a range of 1500 km.In June 2002, former State Department and Pentagon officials confirmed that the U.S. Navy observed Israeli missile tests in the Indian Ocean in 2000, and that the Dolphin-class vessels have been fitted with nuclear-capable cruise missiles of a new design.It is believed by some to be a version of Rafael Armament Development Authority’s Popeye turbo cruise missile while some believe that the missile may be a version of the Gabriel 4LR that is produced by Israel Aircraft Industries. However, others claim that such a range implies an entirely new type of missile. During the second half of the 1990s, Israel asked the United States to sell it 50 Tomahawk
BGM-109 Tomahawk
The Tomahawk is a long-range, all-weather, subsonic cruise missile. Introduced by General Dynamics in the 1970s, it was designed as a medium- to long-range, low-altitude missile that could be launched from a surface platform. It has been improved several times and, by way of corporate divestitures...

 land-attack cruise missiles to enhance its deep-strike capabilities. Washington rejected Israel's request in March 1998, since such a sale would have violated the Missile Technology Control Regime
Missile Technology Control Regime
The Missile Technology Control Regime is an informal and voluntary partnership between 34 countries to prevent the proliferation of missile and unmanned aerial vehicle technology capable of carrying a 500 kg payload at least 300 km....

 guidelines, which prohibit the transfer of missiles with a range exceeding 300 km. Shortly after the rejection, an Israeli official told Defense News
Defense News
Defense News is a global newsweekly on politics, business and technology of defense. Defense News serves an audience of senior military, government and industry decision-makers throughout the world....

, "History has taught us that we cannot wait indefinitely for Washington to satisfy our military requirements. If this weapon system is denied to us, we will have little choice but to activate our own defense industry in pursuit of this needed
capability." In July 1998, the Air Intelligence Center warned the U.S. Congress that Israel was developing a cruise missile of new type.

According to Israeli defence sources, in June 2009 Israeli Dolphin-class submarine sailed from the Mediterranean to the Red Sea
Red Sea
The Red Sea is a seawater inlet of the Indian Ocean, lying between Africa and Asia. The connection to the ocean is in the south through the Bab el Mandeb strait and the Gulf of Aden. In the north, there is the Sinai Peninsula, the Gulf of Aqaba, and the Gulf of Suez...

 via Suez Canal
Suez Canal
The Suez Canal , also known by the nickname "The Highway to India", is an artificial sea-level waterway in Egypt, connecting the Mediterranean Sea and the Red Sea. Opened in November 1869 after 10 years of construction work, it allows water transportation between Europe and Asia without navigation...

 during a drill that showed that Israel can access the Indian Ocean
Indian Ocean
The Indian Ocean is the third largest of the world's oceanic divisions, covering approximately 20% of the water on the Earth's surface. It is bounded on the north by the Indian Subcontinent and Arabian Peninsula ; on the west by eastern Africa; on the east by Indochina, the Sunda Islands, and...

, and the Persian Gulf, far more easily than before. IDF
Israel Defense Forces
The Israel Defense Forces , commonly known in Israel by the Hebrew acronym Tzahal , are the military forces of the State of Israel. They consist of the ground forces, air force and navy. It is the sole military wing of the Israeli security forces, and has no civilian jurisdiction within Israel...

 sources said the decision to allow navy vessels to sail through the canal was made recently and was a definite "change of policy" within the service. Israeli officials said the sub passed through the canal above water. In the event of a conflict with Iran
Iran
Iran , officially the Islamic Republic of Iran , is a country in Southern and Western Asia. The name "Iran" has been in use natively since the Sassanian era and came into use internationally in 1935, before which the country was known to the Western world as Persia...

, and if Israel decided to involve its Dolphin-class submarines, the quickest route would be to send them through the Suez Canal.

The Israeli fleet was expanded after Israel signed 1.3 billion euro contract to purchase two additional submarines from ThyssenKrupp's
ThyssenKrupp
ThyssenKrupp AG is a German multinational conglomerate corporation headquartered in Duisburg Essen, Germany. The corporation consists of 670 companies worldwide. While ThyssenKrupp is one of the world's largest steel producers, the company also provides components and systems for the automotive...

 subsidiary HDW in 2006. These two U212s
Type 212 submarine
The German Type 212 class, also Italian Todaro class, is a highly advanced design of non-nuclear submarine developed by Howaldtswerke-Deutsche Werft AG and Fincantieri S.p.a. for the German and Italian Navy. It features diesel propulsion and an additional air-independent propulsion system using...

 are to be delivered to the Israeli sea corps in 2011 and are "Dolphin II" class submarines. The submarines are believed to be capable of launching cruise missiles carrying nuclear warheads, despite statements by the German government in 2006, in confirming the sale of the two vessels, that they were not equipped to carry nuclear weapons. The two new boats are an upgraded version of the old Dolphins, and equipped with an Air-independent propulsion
Air-independent propulsion
Air-independent propulsion is a term that encompasses technologies which allow a submarine to operate without the need to surface or use a snorkel to access atmospheric oxygen. The term usually excludes the use of nuclear power, and describes augmenting or replacing the diesel-electric propulsion...

 system, that allow them to remain submerged for longer periods of time than the three nuclear arms-capable submarines that have been in Israel's fleet since 1999. In October 2009 it was reported that the Israeli navy sought to buy a sixth Dolphin class submarine.

Other

It has been reported that Israel has several other nuclear weapons capabilities:
  • Suitcase bomb
    Suitcase bomb
    A suitcase nuke is a tactical nuclear weapon which uses, or is portable enough that it could use, a suitcase as its delivery method. Synonyms include suitcase bomb, backpack nuke, mini-nuke, pocket nuke and snuke....

    : Seymour Hersh reports that Israel developed the ability to miniaturize warheads small enough to fit in a suitcase by the year 1973.
  • Tactical nuclear weapon
    Tactical nuclear weapon
    A tactical nuclear weapon refers to a nuclear weapon which is designed to be used on a battlefield in military situations. This is as opposed to strategic nuclear weapons which are designed to menace large populations, to damage the enemy's ability to wage war, or for general deterrence...

    : Israel may also have 175 mm and 203 mm self-propelled artillery pieces, capable of firing nuclear shells. There are three battalions of the 175mm artillery (36 tubes), reportedly with 108 nuclear shells and more for the 203mm tubes. If true, these low yield, tactical nuclear artillery rounds could reach at least 25 miles (40 km), while by some sources it is possible that the range was extended to 45 miles (72 km) during the 1990s.
  • EMP
    Electromagnetic pulse
    An electromagnetic pulse is a burst of electromagnetic radiation. The abrupt pulse of electromagnetic radiation usually results from certain types of high energy explosions, especially a nuclear explosion, or from a suddenly fluctuating magnetic field...

     strike capabilities: Israel allegedly possesses several 1 megaton bombs, which give it a very large EMP
    Electromagnetic pulse
    An electromagnetic pulse is a burst of electromagnetic radiation. The abrupt pulse of electromagnetic radiation usually results from certain types of high energy explosions, especially a nuclear explosion, or from a suddenly fluctuating magnetic field...

     attack abilities. For example, if a megaton class weapon were to be detonated 400 kilometers above Omaha
    Omaha
    Omaha may refer to:*Omaha , a Native American tribe that currently resides in the northeastern part of the U.S. state of Nebraska-Places:United States* Omaha, Nebraska* Omaha, Arkansas* Omaha, Georgia* Omaha, Illinois* Omaha, Texas...

    , Nebraska, USA, nearly the entire continental United States would be affected with potentially damaging EMP experience from Boston
    Boston
    Boston is the capital of and largest city in Massachusetts, and is one of the oldest cities in the United States. The largest city in New England, Boston is regarded as the unofficial "Capital of New England" for its economic and cultural impact on the entire New England region. The city proper had...

     to Los Angeles
    Los Ángeles
    Los Ángeles is the capital of the province of Biobío, in the commune of the same name, in Region VIII , in the center-south of Chile. It is located between the Laja and Biobío rivers. The population is 123,445 inhabitants...

     and from Chicago
    Chicago
    Chicago is the largest city in the US state of Illinois. With nearly 2.7 million residents, it is the most populous city in the Midwestern United States and the third most populous in the US, after New York City and Los Angeles...

     to New Orleans. Similarly, a high altitude airburst could cause serious damage to electrical systems in most of Iran.
  • Enhanced Radiation Weapon (ERW)
    Neutron bomb
    A neutron bomb or enhanced radiation weapon or weapon of reinforced radiation is a type of thermonuclear weapon designed specifically to release a large portion of its energy as energetic neutron radiation rather than explosive energy...

    : Israel also is reported to have an unknown number of neutron bombs.

Policy

Israel’s refusal to admit it has nuclear weapons or to state its policy on use of them make it necessary to gather details from other sources, including unauthorized statements by its political and military leaders.

Possession

Although Israel has officially acknowledged the existence of Dimona since Ben-Gurion's speech to the Knesset in December 1960, Israel has never officially acknowledged its construction or possession of nuclear weapons. In addition to this policy, on 18 May 1966 Prime Minister Levi Eshkol
Levi Eshkol
' served as the third Prime Minister of Israel from 1963 until his death from a heart attack in 1969. He was the first Israeli Prime Minister to die in office.-Biography:...

 told the Knesset that "Israel has no atomic weapons and will not be the first to introduce them into our region," a policy first articulated by Shimon Peres to US President John F. Kennedy
John F. Kennedy
John Fitzgerald "Jack" Kennedy , often referred to by his initials JFK, was the 35th President of the United States, serving from 1961 until his assassination in 1963....

 in April 1963. In the late 1960s, Israeli Ambassador to the US Yitzhak Rabin
Yitzhak Rabin
' was an Israeli politician, statesman and general. He was the fifth Prime Minister of Israel, serving two terms in office, 1974–77 and 1992 until his assassination in 1995....

 informed the United States State Department that its understanding of "introducing" such weapons meant that they would be tested and publicly declared, while merely possessing the weapons did not constitute "introducing" them. Avner Cohen defines this initial posture as "nuclear ambiguity," but he defines the stage after it became clear by 1970 that Israel possessed nuclear weapons as a policy of amimut, or "nuclear opacity."

In 1998, former Prime Minister Shimon Peres
Shimon Peres
GCMG is the ninth President of the State of Israel. Peres served twice as the eighth Prime Minister of Israel and once as Interim Prime Minister, and has been a member of 12 cabinets in a political career spanning over 66 years...

 said that Israel "built a nuclear option, not in order to have a Hiroshima
Atomic bombings of Hiroshima and Nagasaki
During the final stages of World War II in 1945, the United States conducted two atomic bombings against the cities of Hiroshima and Nagasaki in Japan, the first on August 6, 1945, and the second on August 9, 1945. These two events are the only use of nuclear weapons in war to date.For six months...

 but an Oslo
Oslo Accords
The Oslo Accords, officially called the Declaration of Principles on Interim Self-Government Arrangements or Declaration of Principles , was an attempt to resolve the ongoing Palestinian-Israeli conflict...

". The "nuclear option" may refer to a nuclear weapon or to the nuclear reactor near Dimona, which Israel claims is used for scientific research. Peres, in his capacity as the Director General of the Ministry of Defense in the early 1950s, was responsible for building Israel's nuclear capability.

In a December 2006 interview, Israeli Prime Minister Ehud Olmert
Ehud Olmert
Ehud Olmert is an Israeli politician and lawyer. He served as Prime Minister of Israel from 2006 to 2009, as a Cabinet Minister from 1988 to 1992 and from 2003 to 2006, and as Mayor of Jerusalem from 1993 to 2003....

 stated that Iran
Iran
Iran , officially the Islamic Republic of Iran , is a country in Southern and Western Asia. The name "Iran" has been in use natively since the Sassanian era and came into use internationally in 1935, before which the country was known to the Western world as Persia...

 aspires "to have a nuclear weapon as America, France, Israel and Russia
Russia
Russia or , officially known as both Russia and the Russian Federation , is a country in northern Eurasia. It is a federal semi-presidential republic, comprising 83 federal subjects...

." Olmert's office later said that the quote was taken out of context; in other parts of the interview, Olmert refused to confirm or deny Israel's nuclear weapon status.

Doctrine

Israel's nuclear doctrine is shaped by its lack of strategic depth: a subsonic fighter jet could cross the 72 kilometres (38.9 nmi) from the Jordan River to the Mediterranean Sea
Mediterranean Sea
The Mediterranean Sea is a sea connected to the Atlantic Ocean surrounded by the Mediterranean region and almost completely enclosed by land: on the north by Anatolia and Europe, on the south by North Africa, and on the east by the Levant...

 in just 4 minutes. It additionally relies on a reservist-based military which magnifies civilian and military losses in its small population. Israel tries to compensate for these weaknesses by emphasising intelligence
Intelligence (information gathering)
Intelligence assessment is the development of forecasts of behaviour or recommended courses of action to the leadership of an organization, based on a wide range of available information sources both overt and covert. Assessments are developed in response to requirements declared by the leadership...

, maneuverability and firepower.

As a result, its strategy is based on the premise that it cannot afford to lose a single war, and thus must prevent them by maintaining deterrence, including the option of preemption
Preemptive war
A preemptive war is a war that is commenced in an attempt to repel or defeat a perceived inevitable offensive or invasion, or to gain a strategic advantage in an impending war before that threat materializes. It is a war which preemptively 'breaks the peace'. The term: 'preemptive war' is...

. If these steps are insufficient, it seeks to prevent escalation and determine a quick and decisive war outside of its borders.

Strategically, Israel's long-range missiles, nuclear capable aircraft, and possibly its submarines present an effective second strike
Second strike
In nuclear strategy, a second strike capability is a country's assured ability to respond to a nuclear attack with powerful nuclear retaliation against the attacker...

 deterrence against unconventional and conventional attack, and if Israel's defences fail and its population centres be threatened, the Samson Option
Samson Option
The Samson Option is a term used to describe Israel’s alleged deterrence strategy of massive retaliation with nuclear weapons as a “last resort” against nations whose military attacks threaten its existence, and possibly against other targets as well....

, an all out attack against an adversary, would be employed. Its nuclear arsenal can also be used tactically.

Although nuclear weapons are viewed as the ultimate guarantor of Israeli security, as early as the 1960s the country has avoided building its military around them, instead pursuing absolute conventional superiority so as to forestall a last resort nuclear engagement.

According to historian Avner Cohen
Avner Cohen
Avner Cohen is writer, historian, and professor, and is well known for his works on nuclear weapons. Cohen received a B.A. in Philosophy from Tel Aviv University in 1975. He went on to study at York University where he received an M.A. in Philosophy in 1977 and four years later earned a Ph.D....

, Israel first articulated an official policy on the use of nuclear weapons in 1966, which revolved around four "red lines" that could lead to a nuclear response:
  1. A successful military penetration into populated areas within Israel's post-1949 (pre-1967) borders
    Green Line (Israel)
    Green Line refers to the demarcation lines set out in the 1949 Armistice Agreements between Israel and its neighbours after the 1948 Arab-Israeli War...

    .
  2. The destruction of the Israeli Air Force
    Israeli Air Force
    The Israeli Air Force is the air force of the State of Israel and the aerial arm of the Israel Defense Forces. It was founded on May 28, 1948, shortly after the Israeli Declaration of Independence...

    .
  3. The exposure of Israeli cities to massive and devastating air attacks or to possible chemical
    Chemical warfare
    Chemical warfare involves using the toxic properties of chemical substances as weapons. This type of warfare is distinct from Nuclear warfare and Biological warfare, which together make up NBC, the military acronym for Nuclear, Biological, and Chemical...

     or biological
    Biological warfare
    Biological warfare is the use of biological toxins or infectious agents such as bacteria, viruses, and fungi with intent to kill or incapacitate humans, animals or plants as an act of war...

     attacks.
  4. The use of nuclear weapons against Israeli territory.


Use

On 8 October 1973 just after the start of the Yom Kippur War
Yom Kippur War
The Yom Kippur War, Ramadan War or October War , also known as the 1973 Arab-Israeli War and the Fourth Arab-Israeli War, was fought from October 6 to 25, 1973, between Israel and a coalition of Arab states led by Egypt and Syria...

, Golda Meir
Golda Meir
Golda Meir ; May 3, 1898 – December 8, 1978) was a teacher, kibbutznik and politician who became the fourth Prime Minister of the State of Israel....

 and her closest aides decided to put eight nuclear armed F-4s
F-4 Phantom II
The McDonnell Douglas F-4 Phantom II is a tandem two-seat, twin-engined, all-weather, long-range supersonic jet interceptor fighter/fighter-bomber originally developed for the United States Navy by McDonnell Aircraft. It first entered service in 1960 with the U.S. Navy. Proving highly adaptable,...

 at Tel Nof Airbase
Tel Nof Israeli Air Force Base
Tel Nof Israeli Air Force , also known as Air Force Base 8, is one of three principal airbases of the Israeli Air Force. Tel Nof is located near Rehovot, Israel.-History:...

 on 24 hour alert and as many nuclear missile launchers at Sedot Mikha Airbase
Sedot Mikha Airbase
Sdot Micha is an Israeli Air Force base located near Zekharia. It is believed that the base is a rocket launch site for Jericho 1 and Jericho 2 missiles.-Units:*158 Squadron Jericho IRBM*197 Squadron Jericho IRBM...

 operational as possible. Seymour Hersh adds that the initial target list that night "included the Egyptian and Syrian military headquarters near Cairo
Cairo
Cairo , is the capital of Egypt and the largest city in the Arab world and Africa, and the 16th largest metropolitan area in the world. Nicknamed "The City of a Thousand Minarets" for its preponderance of Islamic architecture, Cairo has long been a centre of the region's political and cultural life...

 and Damascus
Damascus
Damascus , commonly known in Syria as Al Sham , and as the City of Jasmine , is the capital and the second largest city of Syria after Aleppo, both are part of the country's 14 governorates. In addition to being one of the oldest continuously inhabited cities in the world, Damascus is a major...

." This nuclear alert was meant not only as a means of precaution, but to push the Soviets to restrain the Arab offensive and to convince the US to begin sending supplies. One later report said that a Soviet intelligence officer did warn the Egypt
Egypt
Egypt , officially the Arab Republic of Egypt, Arabic: , is a country mainly in North Africa, with the Sinai Peninsula forming a land bridge in Southwest Asia. Egypt is thus a transcontinental country, and a major power in Africa, the Mediterranean Basin, the Middle East and the Muslim world...

ian chief of staff, and colleagues of US National Security Advisor Henry Kissinger
Henry Kissinger
Heinz Alfred "Henry" Kissinger is a German-born American academic, political scientist, diplomat, and businessman. He is a recipient of the Nobel Peace Prize. He served as National Security Advisor and later concurrently as Secretary of State in the administrations of Presidents Richard Nixon and...

 said that the threat of a nuclear exchange caused him to urge for a massive Israeli resupply
Operation Nickel Grass
Operation Nickel Grass was an overt strategic airlift operation conducted by the United States to deliver weapons and supplies to Israel during the Yom Kippur War. The Military Airlift Command of the U.S...

. Hersh points out that before Israel obtained its own satellite capability, it engaged in espionage
Espionage
Espionage or spying involves an individual obtaining information that is considered secret or confidential without the permission of the holder of the information. Espionage is inherently clandestine, lest the legitimate holder of the information change plans or take other countermeasures once it...

 against the United States to obtain nuclear targeting information on Soviet targets.

Israeli military and nuclear doctrine increasingly focused on preemptive war
Preemptive war
A preemptive war is a war that is commenced in an attempt to repel or defeat a perceived inevitable offensive or invasion, or to gain a strategic advantage in an impending war before that threat materializes. It is a war which preemptively 'breaks the peace'. The term: 'preemptive war' is...

 against any possible attack with conventional, chemical, biological or nuclear weapons, or even a potential conventional attack on Israel's weapons of mass destruction.

Louis René Beres
Louis Rene Beres
Louis René Beres is a professor of Political Science at Purdue University in West Lafayette, IN. The son of Austrian Jewish refugees, he was born on August 31, 1945 in Zürich, Switzerland and earned a B.A. from Queens College and an M.A. and Ph.D. from Princeton University in 1971...

, who contributed to Project Daniel
Project Daniel
Project Daniel was a 2003 Israeli project, commissioned to assess the threat to the nation of Israel from other states in the Middle East, drawing particular attention to Iran, with Iran's nuclear program in mind. It was prepared by a high-powered team of Israeli foreign policy and military experts...

, urges that Israel continue and improve these policies, in concert with the increasingly preemptive nuclear policies of the United States, as revealed in the Doctrine for Joint Nuclear Operations
Doctrine for Joint Nuclear Operations
The Doctrine for Joint Nuclear Operations was a U.S. Department of Defense document publicly discovered in 2005 on the circumstances under which commanders of U.S. forces could request the use of nuclear weapons...

.

After Iraq
Iraq
Iraq ; officially the Republic of Iraq is a country in Western Asia spanning most of the northwestern end of the Zagros mountain range, the eastern part of the Syrian Desert and the northern part of the Arabian Desert....

 attacked Israel with Scud missile
Scud
Scud is a series of tactical ballistic missiles developed by the Soviet Union during the Cold War, and exported widely to other countries. The term comes from the NATO reporting name SS-1 Scud which was attached to the missile by Western intelligence agencies...

s during the 1991 Gulf War
Gulf War
The Persian Gulf War , commonly referred to as simply the Gulf War, was a war waged by a U.N.-authorized coalition force from 34 nations led by the United States, against Iraq in response to Iraq's invasion and annexation of Kuwait.The war is also known under other names, such as the First Gulf...

, Israel went on full-scale nuclear alert and mobile nuclear missile launchers were deployed. In the build up to the United States 2003 invasion of Iraq
2003 invasion of Iraq
The 2003 invasion of Iraq , was the start of the conflict known as the Iraq War, or Operation Iraqi Freedom, in which a combined force of troops from the United States, the United Kingdom, Australia and Poland invaded Iraq and toppled the regime of Saddam Hussein in 21 days of major combat operations...

, there were concerns that Iraq would launch an unconventional weapons attack on Israel. After discussions with President George W. Bush
George W. Bush
George Walker Bush is an American politician who served as the 43rd President of the United States, from 2001 to 2009. Before that, he was the 46th Governor of Texas, having served from 1995 to 2000....

, the then Israeli Prime Minister Ariel Sharon
Ariel Sharon
Ariel Sharon is an Israeli statesman and retired general, who served as Israel’s 11th Prime Minister. He has been in a permanent vegetative state since suffering a stroke on 4 January 2006....

 warned "If our citizens are attacked seriously — by a weapon of mass destruction, chemical, biological or by some mega-terror attack act — and suffer casualties, then Israel will respond." Israeli officials interpreted President Bush's stance as allowing a nuclear Israeli retaliation on Iraq, but only if Iraq struck before the US military invasion.

Maintaining nuclear superiority

Alone or with other nations, Israel has used diplomatic and military efforts as well as covert action to prevent other Middle Eastern countries from acquiring nuclear weapons.

For example, it is believed that Israel filed a false laser patent in the late 1970s to mislead Arab nuclear research. Mossad agents triggered explosions in April 1979 at a French production plant near Toulouse
Toulouse
Toulouse is a city in the Haute-Garonne department in southwestern FranceIt lies on the banks of the River Garonne, 590 km away from Paris and half-way between the Atlantic Ocean and the Mediterranean Sea...

, damaging the two reactor cores destined for the Iraqi reactors. Mossad agents may also have been behind the assassinations of an Egyptian nuclear engineer in Paris as well as two Iraqi engineers, all working for the Iraqi nuclear program.

On 7 June 1981, Israel launched a preemptive air strike against Saddam Hussein
Saddam Hussein
Saddam Hussein Abd al-Majid al-Tikriti was the fifth President of Iraq, serving in this capacity from 16 July 1979 until 9 April 2003...

's breeder reactor
Breeder reactor
A breeder reactor is a nuclear reactor capable of generating more fissile material than it consumes because its neutron economy is high enough to breed fissile from fertile material like uranium-238 or thorium-232. Breeders were at first considered superior because of their superior fuel economy...

 in Osirak, Iraq, in Operation Opera
Operation Opera
Operation Babylon was a surprise Israeli air strike carried out on June 7, 1981, that destroyed a nuclear reactor under construction 17 kilometers southeast of Baghdad, Iraq....

. The Mossad
Mossad
The Mossad , short for HaMossad leModi'in uleTafkidim Meyuchadim , is the national intelligence agency of Israel....

 – as well as any number of other intelligence agencies – are also frequently said to have assassinated professor Gerald Bull
Gerald Bull
Gerald Vincent Bull was a Canadian engineer who developed long-range artillery. He moved from project to project in his quest to launch economically a satellite using a huge artillery piece, to which end he designed the Project Babylon "supergun" for the Iraqi government...

, an artillery expert, who was allegedly building a massive cannon or "super gun" for Saddam Hussein
Saddam Hussein
Saddam Hussein Abd al-Majid al-Tikriti was the fifth President of Iraq, serving in this capacity from 16 July 1979 until 9 April 2003...

 in the 1980s, which was capable of delivering a tactical nuclear payload.

On 6 September 2007, Israel launched an air strike dubbed Operation Orchard
Operation Orchard
Operation Orchard was an Israeli airstrike on a nuclear reactor in the Deir ez-Zor region of Syria carried out just after midnight on September 6, 2007. The White House and Central Intelligence Agency later confirmed that American intelligence had also indicated the site was a nuclear facility...

 against a target in the Deir ez-Zor region
Deir ez-Zor Governorate
Deir ez-Zor Governorate or Muhafazah Dayr az Zawr is one of the fourteen governorates of Syria. It is situated in eastern Syria, bordering Iraq. It has an area of 33,060 km² and a population of 1,202,000...

 of Syria
Syria
Syria , officially the Syrian Arab Republic , is a country in Western Asia, bordering Lebanon and the Mediterranean Sea to the West, Turkey to the north, Iraq to the east, Jordan to the south, and Israel to the southwest....

. While Israel refused to comment, unnamed US officials said Israel had shared intelligence with them that North Korea
North Korea
The Democratic People’s Republic of Korea , , is a country in East Asia, occupying the northern half of the Korean Peninsula. Its capital and largest city is Pyongyang. The Korean Demilitarized Zone serves as the buffer zone between North Korea and South Korea...

 was cooperating with Syria on some sort of nuclear facility. Both Syria and North Korea denied the allegation and Syria filed a formal complaint with the United Nations. The International Atomic Energy Agency
International Atomic Energy Agency
The International Atomic Energy Agency is an international organization that seeks to promote the peaceful use of nuclear energy, and to inhibit its use for any military purpose, including nuclear weapons. The IAEA was established as an autonomous organization on 29 July 1957...

 concluded in May 2011 that the destroyed facility was "very likely" an undeclared nuclear reactor.

Journalist Seymour Hersh speculated that this air strike might have been intended as a trial run for striking alleged Iranian nuclear weapons facilities.
On January 7, 2007 The Sunday Times
The Sunday Times
The Sunday Times is a British Sunday newspaper.The Sunday Times may also refer to:*The Sunday Times *The Sunday Times *The Sunday Times *The Sunday Times...

 reported that Israel had drawn up plans to destroy three Iranian nuclear facilities with low-yield nuclear bunker-busters that would be launched by aircraft through "tunnels" created by conventional laser-guided bomb
Laser-guided bomb
A laser-guided bomb is a guided bomb that uses semi-active laser homing to strike a designated target with greater accuracy than an unguided bomb. LGBs are one of the most common and widespread guided bombs, used by a large number of the world's air forces.- Overview :Laser-guided munitions use a...

s. These tactical nuclear weapons would then explode underground to reduce radioactive fallout. Israel swiftly denied the specific allegation and analysts expressed doubts about its reliability. However, in 2004 its then Defense minister said that it rules out no option. The death of the Iranian physicist
Physicist
A physicist is a scientist who studies or practices physics. Physicists study a wide range of physical phenomena in many branches of physics spanning all length scales: from sub-atomic particles of which all ordinary matter is made to the behavior of the material Universe as a whole...

 Ardeshir Hassanpour, who may have been involved in the nuclear program, has been reported by the intelligence group Stratfor
Stratfor
Strategic Forecasting, Inc., more commonly known as STRATFOR, is a global intelligence company founded in 1996 in Austin, Texas by George Friedman who is the founder, chief intelligence officer, and CEO of the company...

 to have been a Mossad assassination.
Iran
Iran
Iran , officially the Islamic Republic of Iran , is a country in Southern and Western Asia. The name "Iran" has been in use natively since the Sassanian era and came into use internationally in 1935, before which the country was known to the Western world as Persia...

 is currently conducting atomic research
Nuclear program of Iran
The nuclear program of Iran was launched in the 1950s with the help of the United States as part of the Atoms for Peace program. The support, encouragement and participation of the United States and Western European governments in Iran's nuclear program continued until the 1979 Iranian Revolution...

 that Israel fears is aimed at building a nuclear weapon. Israel has pressed for United Nations economic sanctions against Iran
Sanctions against Iran
This article outlines economic, trade, scientific and military sanctions against Iran, which have been imposed by the U.S. government, or under U.S. pressure by the international community through the United Nations Security Council...

, and has repeatedly threatened to launch a military strike on Iran if the United States does not do so first.

The 2010 Stuxnet
Stuxnet
Stuxnet is a computer worm discovered in June 2010. It initially spreads via Microsoft Windows, and targets Siemens industrial software and equipment...

 malware
Malware
Malware, short for malicious software, consists of programming that is designed to disrupt or deny operation, gather information that leads to loss of privacy or exploitation, or gain unauthorized access to system resources, or that otherwise exhibits abusive behavior...

 targeting Iran's nuclear program is widely believed to have been sponsored by Israel. In 2009, a year before Stuxnet was discovered, researcher Scott Borg suggested that Israel might prefer to mount a cyber-attack rather than a military strike on Iran's nuclear facilities. Iran uses IR-1 centrifuges at Natanz, which are based on the P-1 centrifuge, the design A. Q. Khan stole in 1976 and took to Pakistan. His black market nuclear-proliferation network sold P-1s to, among other customers, Iran and Libya. Experts believe that Israel also somehow acquired P-1s and tested Stuxnet on the centrifuges, installed at the Dimona
Negev Nuclear Research Center
The Negev Nuclear Research Center is an Israeli nuclear installation located in the Negev desert, about thirteen kilometers to the south-east of the city of Dimona. The purpose of Dimona is widely assumed to be the manufacturing of nuclear weapons, and the majority of defense experts have...

 facility that is part of its own nuclear program. The equipment may be from the United States, which received P-1s from Libya's former nuclear program
Libya and nuclear technology
Libya possesses chemical weapons and ballistic missiles and previously pursued nuclear weapons under the leadership of Muammar Gaddafi. On 19 December 2003, Gaddafi announced that Libya would voluntarily eliminate all materials, equipment and programs that could lead to internationally proscribed...

.

Nuclear Non-Proliferation Treaty and United Nations’ Resolutions

Israel was originally expected to sign the 1968 Nuclear Non-Proliferation Treaty
Nuclear Non-Proliferation Treaty
The Treaty on the Non-Proliferation of Nuclear Weapons, commonly known as the Non-Proliferation Treaty or NPT, is a landmark international treaty whose objective is to prevent the spread of nuclear weapons and weapons technology, to promote cooperation in the peaceful uses of nuclear energy and to...

 (NPT) and on 12 June 1968 Israel voted in favor of the treaty in the UN General Assembly. But when the invasion of Czechoslovakia
Czechoslovakia
Czechoslovakia or Czecho-Slovakia was a sovereign state in Central Europe which existed from October 1918, when it declared its independence from the Austro-Hungarian Empire, until 1992...

 in August by the Soviet Union delayed ratification around the world, Israel's internal division and hesitation over the treaty became public. The Johnson administration attempted to use the sale of 50 F-4 Phantoms
F-4 Phantom II
The McDonnell Douglas F-4 Phantom II is a tandem two-seat, twin-engined, all-weather, long-range supersonic jet interceptor fighter/fighter-bomber originally developed for the United States Navy by McDonnell Aircraft. It first entered service in 1960 with the U.S. Navy. Proving highly adaptable,...

 to pressure Israel to sign the treaty that fall, culminating in a personal letter from Lyndon Johnson to Israeli PM Levi Eshkol
Levi Eshkol
' served as the third Prime Minister of Israel from 1963 until his death from a heart attack in 1969. He was the first Israeli Prime Minister to die in office.-Biography:...

. But by November Johnson had backed away from tying the F-4 sale with the NPT after a stalemate in negotiations, and Israel would neither sign nor ratify the treaty. After the series of negotiations, US assistant secretary of defense for international security Paul Warnke
Paul Warnke
Paul Culliton Warnke was a United States diplomat.He was born in Webster, Massachusetts but spent most of his childhood in Marlborough, Massachusetts, where his father managed a shoe factory. He attended Yale University, fought in World War II for five years in the United States Coast Guard, and...

 was convinced that Israel already possessed nuclear weapons. In 2007 Israel sought an exemption to non-proliferation rules in order to import atomic material legally.

In 1996 the United Nations General Assembly
United Nations General Assembly
For two articles dealing with membership in the General Assembly, see:* General Assembly members* General Assembly observersThe United Nations General Assembly is one of the five principal organs of the United Nations and the only one in which all member nations have equal representation...

 passed a resolution calling for the establishment of a nuclear-weapon-free zone in the region of the Middle East. Arab nations and annual conferences of the International Atomic Energy Agency
International Atomic Energy Agency
The International Atomic Energy Agency is an international organization that seeks to promote the peaceful use of nuclear energy, and to inhibit its use for any military purpose, including nuclear weapons. The IAEA was established as an autonomous organization on 29 July 1957...

 (IAEA) repeatedly have called for application of IAEA safeguards and the creation of a nuclear-free Middle East. Arab nations have accused the United States of practicing a double standard in criticizing Iran's nuclear program while ignoring Israel's possession of nuclear weapons. According to a statement by the Arab League
Arab League
The Arab League , officially called the League of Arab States , is a regional organisation of Arab states in North and Northeast Africa, and Southwest Asia . It was formed in Cairo on 22 March 1945 with six members: Egypt, Iraq, Transjordan , Lebanon, Saudi Arabia, and Syria. Yemen joined as a...

, Arab states will withdraw from the NPT if Israel acknowledges having nuclear weapons but refuses to open its facilities to international inspection and destroy its arsenal.

In a statement to the May 2009 preparatory meeting for the 2010 NPT Review Conference, the U.S. delegation reiterated the longstanding U.S. support for "universal adherence to the NPT," but uncharacteristically named Israel among the four countries that have not done so. An unnamed Israeli official dismissed the suggestion that it would join the NPT and questioned the effectiveness of the treaty. The Washington Times reported that this statement threatened to derail the 40-year-old secret agreement between the US and Israel to shield Israel's nuclear weapons program from international scrutiny, while Avner Cohen, author of Israel and the Bomb, argued that acknowledging its nuclear program would allow Israel to take part constructively in efforts to control nuclear weapons.

The Final Document of the 2010 NPT Review Conference calls for a conference in 2012 to implement a resolution of the 1995 NPT Review Conference that calls for the establishment of a Middle East Zone free of weapons of mass destruction. The United States joined the international consensus for Final Document, but criticized the section on the Middle East resolution for singling out Israel as the only state in the region that is not party to the NPT, while at the same time ignoring Iran's non-compliance with its NPT obligations.

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