1982 Lebanon War
The 1982 Lebanon War, dubbed Operation Peace for Galilee ( "Mivtsa Shlom HaGalil" or "Mivtsa Sheleg") by the Israeli government, later known in Israel as the Lebanon War or the First Lebanon War (, "Milhemet Levanon Harishona"), and known in Lebanon as "the invasion" (, "Al-ijtiyāḥ"), began on 6 June 1982, when the Israel Defense Forces (IDF) invaded southern Lebanon, after repeated attacks and counter-attacks between the Palestine Liberation Organization (PLO) operating in southern Lebanon and the IDF that had caused civilian casualties on both sides of the border. The military operation was launched after gunmen from Abu Nidal's organization attempted to assassinate Shlomo Argov, Israel's ambassador to the United Kingdom. Israeli Prime Minister Menachem Begin blamed Abu Nidal's enemy, the PLO, for the incident, and used the incident as a "casus belli" for the invasion.