Operation Peace for the Galilee

The 1982 Lebanon War (, Al-ijtiyāḥ, "the invasion"), (, Milhemet Levanon Harishona, "the first Lebanon war"), called Operation Peace for Galilee ( Mivtsa Shlom HaGalil or Mivtsa Sheleg) by Israel, and later known in Israel as the Lebanon War and First Lebanon War, 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 which 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. Prime Minister Menachem Begin blamed Abu Nidal's enemy, the PLO, for the incident, and treated the incident as a casus belli for the invasion.