The Israeli Military Governorate was a military governance system established following the Six-Day War in June 1967, in order to govern the civilian population of the West Bank, the Gaza Strip, the Sinai Peninsula and the Western part of Golan Heights. The governance was based on the Fourth Geneva Convention, which provides guidelines for military rule in occupied areas. East Jerusalem was the only exception from this order, and it was added to Jerusalem municipal area as early as 1967, and extending Israeli law to the area effectively annexing it in 1980. During this period, the UN and many sources referred to the military governed areas as Occupied Arab Territories.