Historians date the Fayadiyeh incident to 7 February (de Clerck and Malsagne), 8 February (Hanf) or 17 February (Ménargues). It began when Syrian soldiers set up a roadblock in front of the Military Academy; officer cadets, led according to de Clerck and Malsagne by Captain Samir (Sami) al-Achkar, fought back and Syrian artillery shelled the barracks. Syrian losses are given as 13 dead and 36 wounded (de Clerck and Malsagne), over 30 dead (Ménargues) or 220 dead and 30 wounded (Hanf). As fighting spread into East Beirut, about a hundred people died when Syrian guns shelled Badaro, Ain el-Remmaneh and Karm el-Zeitoun. Sarkis and Damascus settled the affair with a joint Lebanese-Syrian military court. De Clerck and Malsagne date the Syria-Christian split to it.

Bashir Gemayel, back from Saudi Arabia on 2 July, said the PLO did not mean to leave. Two hours earlier, at the Alexandre Hotel, Sharon had told reporters, Robert Fisk among them, that Israel's only aim was to destroy the PLO and it wanted not 'one square inch' of Lebanon.

By late 1986, say de Clerck and Malsagne, Chatila was 90 percent destroyed, yet 500 to 1,000 Palestinians held out inside. In the winter of 1987, Picard writes, many Palestinians in the besieged Beirut camps died of hunger.