Fisk: violating the UN's agreements with Israel, Haddad's militia set up positions inside the UNIFIL zone in spring 1980, beside At-Tiri, near Beit Yahoun and at ruined Rashaf, where it parked a Sherman tank reached by a road built with Israeli help.

Fisk: in the April 1980 fighting at At-Tiri, Haddad's gunmen killed Private Stephen Griffin of the Irish UNIFIL battalion and UN troops killed a militiaman, whose death two other Irish soldiers later paid for. The militia also held the coastal strip between the French unit and Naqoura and shot at helicopters.

Hanf sees the Iran–Iraq war of September 1980 as already being fought earlier in Beirut's suburbs: Amal and the Iraqi-backed Arab Liberation Front clashed there despite repeated ceasefires, and the fighting spread south, where a dozen villages were contested until mid-1982. De Clerck and Malsagne list the Iraqi Baath among Amal's adversaries.

Ménargues dates the resignation to March 1980, after repeated deadlock between Hoss and Sarkis over the army; Hoss stayed on as caretaker until Shafiq Wazzan's appointment in late October.

Hanf records the Lebanese Front's formula as 'political pluralism, military unity'. Traboulsi describes an eight-member executive committee under Bashir Gemayel running the Lebanese Forces: three Phalange seats, two each for the National Liberals and the Tanzim, one for the Guardians of the Cedars. Ménargues notes that after Ain el-Remmaneh Bashir had every unit swap its militia badges for one common insignia.

Ménargues counts 10 dead and 62 wounded from two car bombs in Achrafieh, Bashir Gemayel's power base.

The crisis began on 20 December when Elias Hannouche, a former Tiger commander backed by Syria, seized the old National Liberal office in Zahle. After an ambush inside the town killed five Syrian soldiers on 22 December, Syrian artillery opened fire on it (Ménargues; Hanf counts an officer and five soldiers). De Clerck and Malsagne date the bombardment to 21 December and call it the first round of the battle of Zahle. Most of the former Tigers then joined the Lebanese Forces, and Syrian troops stayed positioned around the town until the siege of spring 1981.

Historians date the battle of Zahleh from this day, when Lebanese Forces fighters beat off a Syrian attack on the town and a siege of some 90 days began. Ménargues says Syrian heavy guns killed 50 and wounded over 200 that day in Zahleh and the Christian zone north of Beirut.

Ménargues dates a day of intensive shelling of Zahleh, with about twenty dead, to 6 April.