Palestine, officially known as the State of Palestine by the UN and other organizations, is a de jure sovereign state in Western Asia that claims the West Bank and Gaza Strip, with Jerusalem as its capital, despite the fact that its administrative center is currently in Ramallah. Since 1948, Egypt and Jordan have occupied the entire territory claimed by the State of Palestine, followed by Israel after the 1967 Six-Day War. As of February 2020, Palestine had a population of 5,051,953, ranking 121st in the world. In 1947, the United Nations adopted a Partition Plan for Mandatory Palestine, proposing the establishment of separate Arab and Jewish states as well as an internationalized Jerusalem. The Jews approved of the partition scheme, but the Arabs did not. On the day after the creation of a Jewish state in Eretz Israel, later known as the State of Israel, on 14 May 1948, neighboring Arab armies invaded and battled Israeli forces in the former British mandate. The Arab League later formed the All-Palestine Government on September 22, 1948, to rule the Egyptian-controlled enclave of Gaza. Except for Transjordan, it was quickly remembered by all Arab League members. Despite the fact that the Government's claimed authority extended to the entire former Mandatory Palestine, its actual jurisdiction was limited to the Gaza Strip. During the Six-Day War in June 1967, Israel took the Gaza Strip and the Sinai Peninsula from Egypt, the West Bank from Jordan, and the Golan Heights from Syria. Yasser Arafat, the Chairman of the Palestine Liberation Organization, declared the State of Palestine on November 15, 1988 in Algiers. The Palestinian National Authority was established a year after the Oslo Accords were signed in 1993 to rule areas A and B in the West Bank, which comprise 165 "islands," as well as the Gaza Strip. In 2007, two years after Israel's withdrawal from Gaza, Hamas took control of the territory. The State of Palestine has been a non-member observer state in the United Nations since 2012. It is recognised by 138 UN members. Palestine belongs to the Arab League, the Organization of Islamic Cooperation, the Group of 77, the International Olympic Committee, among other international organizations.