British officials representing Iraqi interests signed the Treaty of Mohammara, which established the boundary between Iraq and the future Saudi Arabia. Later that year, the Uqair Protocol signed by the two parties agreed to the creation of a diamond-shaped Saudi Arabian–Iraqi neutral zone of approximately 7,000 square kilometers, adjacent to the western tip of Kuwait, within which neither Iraq nor Saudi Arabia would build permanent dwellings or installations. The agreement was designed to safeguard water rights in the zone for Bedouin of both countries. In May 1938, Iraq and Saudi Arabia signed an additional agreement regarding the administration of the zone. Forty-three years later, Saudi Arabia and Iraq signed an agreement that defined the border between the two countries and provided for the division of the neutral zone between them. The agreement effectively dissolved this neutral zone. The boundary between Ibn Saud's territories of Najd and the Eastern Province and the British protectorate of Kuwait was first regulated by the Al Uqair Convention in 1922. In an effort to avoid territorial disputes, another diamond-shaped Saudi–Kuwaiti neutral zone of 5,790 square kilometers directly south of Kuwait was established. In 1938 oil was discovered in Kuwait's southern Burqan fields, and both countries contracted with foreign oil companies to perform exploration work in the Divided Zone. After years of discussions, Saudi Arabia and Kuwait reached an agreement in 1965 that divided the zone geographically, with each country administering its half of the zone. The agreement guaranteed that the rights of both parties to the natural resources in the whole zone would continue to be respected after each country had annexed its half of the zone in 1966. Saudi Arabia's eastern boundary follows the Persian Gulf from Ras 'al Khafji to the peninsula of Qatar, whose border with Saudi Arabia was determined in 1965. The Saudi border with the state of Oman, on the southeastern coast of the Arabian Peninsula, runs through the Empty Quarter (Rub 'al-Khali). The border demarcation was defined by a 1990 agreement between Saudi Arabia and Oman that included provisions for shared grazing rights and water rights. The border through 'Al Buraymi Oasis, located near the conjunction of the frontiers of Oman, Abu Dhabi (one of the emirates of the UAE) and Saudi Arabia, has triggered extensive dispute among the three states since the Treaty of Jeddah in 1927. In a 1975 agreement with Saudi Arabia, Abu Dhabi accepted sovereignty