a Resolution 181(II) recommending partition into an Arab state, a Jewish state and the Special International Regime for the City of Jerusalem. The Jewish leadership accepted the proposal, but the Arab Higher Committee rejected it; a civil war began immediately after the Resolution's adoption. The State of Israel was declared in May 1948. Post-1948 In the 1948 Arab–Israeli War, Israel captured and incorporated a further 26% of the Mandate territory, Jordan captured the regions of Judea and Samaria, renaming it the "West Bank", while the Gaza Strip was captured by Egypt. Following the 1948 Palestinian exodus, also known as al-Nakba, the 700,000 Palestinians who fled or were driven from their homes were not allowed to return following the Lausanne Conference of 1949. In the course of the Six-Day War in June 1967, Israel captured the rest of Mandate Palestine from Jordan and Egypt, and began a policy of establishing Jewish settlements in those territories. From 1987 to 1993, the First Palestinian Intifada against Israel took place, which included the Declaration of the State of Palestine in 1988 and ended with the 1993 Oslo Peace Accords and the creation of the Palestinian National Authority. In 2000, the Second Intifada (also called al-Aqsa Intifada) began, and Israel built a separation barrier. In the 2005 Israeli disengagement from Gaza, Israel withdrew all settlers and military presence from the Gaza Strip, but maintained military control of numerous aspects of the territory including its borders, air space and coast. Israel's ongoing military occupation of the Gaza Strip, the West Bank and East Jerusalem continues to be the world's longest military occupation in modern times. In November 2012, the status of Palestinian delegation in the United Nations was upgraded to non-member observer state as the State of Palestine. Boundaries Pre-modern The boundaries of Palestine have varied throughout history. The Jordan Rift Valley (comprising Wadi Arabah, the Dead Sea and River Jordan) has at times formed a political and administrative frontier, even within empires that have controlled both territories. At other times, such as during certain periods during the Hasmonean and Crusader states for example, as well as during the biblical period, territories on both sides of the river formed part of the same administrative unit. During the Arab Caliphate period, parts of southern Lebanon and the northern highland areas of Palestine and Jordan were administered as Jund al-Urdun, while the southern parts of the latter two