Glasnost was the policy of maximal publicity, openness, and transparency in the activities of all government institutions in the Soviet Union
Soviet Union
The Soviet Union , officially the Union of Soviet Socialist Republics , was a constitutionally socialist state that existed in Eurasia between 1922 and 1991....

, together with freedom of information
Freedom of information
Freedom of information refers to the protection of the right to freedom of expression with regards to the Internet and information technology . Freedom of information may also concern censorship in an information technology context, i.e...

, introduced by Mikhail Gorbachev
Mikhail Gorbachev
Mikhail Sergeyevich Gorbachev is a former Soviet statesman, having served as General Secretary of the Communist Party of the Soviet Union from 1985 until 1991, and as the last head of state of the USSR, having served from 1988 until its dissolution in 1991...

 in the second half of the 1980s. The word "glasnost" is used in Russian at least since the end of the 18th century.
The word was frequently used by Gorbachev to specify the policies he believed might help reduce the corruption at the top of the Communist Party and the Soviet government, and moderate the abuse of administrative power in the Central Committee
Central Committee
Central Committee was the common designation of a standing administrative body of communist parties, analogous to a board of directors, whether ruling or non-ruling in the twentieth century and of the surviving, mostly Trotskyist, states in the early twenty first. In such party organizations the...