The Israeli–Palestinian conflict is an ongoing military and political conflict about land and self-determination within the territory of the former Mandatory Palestine. Key aspects of the conflict include the Israeli occupation of the West Bank and Gaza Strip, the status of Jerusalem, Israeli settlements, borders, security, water rights, the permit regime, Palestinian freedom of movement, and the Palestinian right of return.

The conflict has its origins in the rise of Zionism in Europe and the arrival of Jewish settlers to Ottoman Palestine in the late 19th and early 20th centuries. The local Arab population opposed Zionism, primarily out of fear of territorial displacement and dispossession. The Zionist movement garnered the support of an imperial power in the 1917 Balfour Declaration issued by Britain, which promised to support the creation of a "Jewish homeland in Palestine". Following the British occupation of the formerly Ottoman region during World War I, Mandatory Palestine was established as a British mandate. Increasing Jewish immigration led to tensions between Jews and Arabs which grew into intercommunal conflict. In 1936, an Arab revolt erupted demanding independence, which the British suppressed.

The 1947 United Nations Partition Plan for Palestine triggered the 1948 Palestine war, which saw the expulsion and flight of most Palestinian Arabs, the establishment of Israel on most of the Mandate's territory, and the control of the Gaza Strip and the West Bank by Egypt and Jordan, respectively. In the 1967 Six-Day War, Israel occupied the West Bank and the Gaza Strip (which became known as the Palestinian territories), which is now considered to be the longest military occupation in modern history, and has drawn international condemnation for violating the human rights of the Palestinians.