In 1982 , an international commission investigated into reported violations of International Law by Israel during its invasion of the Lebanon . Chairman was Seán MacBride , the other members were Richard Falk , Kader Asmal , Brian Bercusson , Géraud de la Pradelle , and Stefan Wild . The commission 's report concluded that " the government of Israel has committed acts of aggression contrary to international law " , that the government of Israel had no valid reasons under international law for its invasion of Lebanon , and that the Israeli authorities or forces were directly or indirectly responsible for the massacres and killings , which have been reported to have been carried out by Lebanese militiamen in Sabra and the Shatila refugee camp in the Beirut area between 16 and 18 September
massacres and killings
Sabra and Shatila massacre
1982 Lebanon War