The reduction of Palestinian-controlled territory resulted from a complex sequence of historical events, political decisions, and military conflicts spanning nearly a century.
After the Ottoman Empire's collapse, the League of Nations granted Britain administrative control over Palestine. British policies favored Jewish immigration and land acquisition, creating escalating tension between Arab and Jewish communities.
The United Nations proposed dividing Palestine into separate Jewish and Arab states. Jewish leadership accepted; Arab leadership rejected the plan, viewing it as unjust allocation of land.
The 1948 Arab-Israeli War established the State of Israel. During the conflict, approximately 700,000 Palestinians fled or were expelled from their homes—an event Palestinians call the Nakba ("catastrophe"). Israel controlled 78% of former Mandatory Palestine, exceeding the UN partition allocation.
Following the Six-Day War, Israel occupied the West Bank, East Jerusalem, and Gaza Strip. Subsequent Israeli settlement construction in these territories—considered illegal under international law—fragmented Palestinian land and restricted movement and resource access.
In 2020, Israel moved toward formal annexation of West Bank areas, further eroding prospects for a contiguous Palestinian state.
This history involves competing narratives, legitimate grievances, and profound human consequences on all sides. The conflict's resolution requires addressing core issues: borders, settlements, refugees, security, and mutual recognition.