The 1982 Lebanon War (Hebrew: מלחמת לבנון הראשונה‎‎, Milhemet Levanon Harishona, "the first Lebanon war"), called Operation Peace for Galilee (Hebrew: מבצע שלום הגליל, or מבצע של"ג‎‎ Mivtsa Shlom HaGalil or Mivtsa Sheleg;by Israel, and later known in Israel as the Lebanon War and First Lebanon War, and Arabic: الاجتياح‎‎, Al-ijtiyāḥ, "the invasion") by the Arabs, 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 Un