Ras Al Khafji or Khafji (الخفجي) is a town on the border between Saudi Arabia

Saudi Arabia

The Kingdom of Saudi Arabia , commonly known in British English as Saudi Arabia and in Arabic as as-Sa‘ūdiyyah , is the largest state in Western Asia by land area, constituting the bulk of the Arabian Peninsula, and the second-largest in the Arab World...

 and Kuwait

Kuwait

The State of Kuwait is a sovereign Arab state situated in the north-east of the Arabian Peninsula in Western Asia. It is bordered by Saudi Arabia to the south at Khafji, and Iraq to the north at Basra. It lies on the north-western shore of the Persian Gulf. The name Kuwait is derived from the...

. It lies in what was before 1970 a neutral zone between Kuwait and Saudi Arabia. The Japanese-owned Arabian Oil Company Ltd signed a concession agreement with the government of Saudi Arabia in December 1957 and with the government of Kuwait in July 1958 for exploration and development of hydrocarbon reserves in the offshore Neutral Zone.