In 1982 , the PLO attacks from Lebanon on Israel led to an Israeli invasion . A multinational force of American , French and Italian contingents ( joined in 1983 by a British contingent ) were deployed in Beirut after the Israeli siege of the city , to supervise the evacuation of the PLO . It returned in September 1982 after the assassination of Bashir Gemayel and subsequent fighting . During this time a number of massacres occurred , such as in Sabra and Shatila , and in several refugee camps . The multinational force was withdrawn in the spring of 1984 , following a devastating bombing attack during the previous year
Sabra and Shatila
Sabra and Shatila massacre
Lebanon