Lebanon War
The 1982 Lebanon War, called by Israel the Operation Peace of the Galilee , and later colloquially also known in Israel as the First Lebanon War, began June 6, 1982, when the Israel Defense Forces invaded southern Lebanon. The Government of Israel gave a green light for the invasion as a response to the assassination attempt against Israel's ambassador to the United Kingdom, Shlomo Argov by the Abu Nidal Organization. See also Operation Litani.
After attacking PLO, Syrian and Muslim Lebanese forces, Israel occupied southern Lebanon. Surrounded in West Beirut and subject to heavy bombardment, the PLO and the Syrian forces negotiated passage from Lebanon with the aid of international peacekeepers.