Following the assassination , the Israeli army occupied Beirut , and allowed the Lebanese Forces ( LF ) to enter the Sabra and Shatila refugee camps , where the LF carried out a massacre of mostly Palestinians and Lebanese Shiites . Between 1,390 and 3,500 civilians were massacred . It sparked international outrage for Israel 's actions , particularly because the PLO had already been removed from Lebanon . The Kahan Commission by the Israeli government found Defense Minister Ariel Sharon personally responsible for the bloodshed . The incident led to his resignation as Defense Minister , however he remained in the Israeli Cabinet and would later become Israeli Prime Minister in 2001
massacre
Sabra and Shatila massacre
Israel–Lebanon relations