De Clerck and Malsagne list Wadi Chahrour and Kfarchima among the National Liberals' bases in Beirut's south-eastern suburbs and end the wave of clashes between Christian militias on 2 July 1980. Ménargues describes near-daily fighting in the second half of June. Bashir Gemayel settled the rivalry by force on 7 July.

Historians date the assault to 7 July 1980 (Ménargues, de Clerck and Malsagne, Hanf, Traboulsi, Picard). At dawn Bashir Gemayel's units struck National Liberal offices and barracks throughout the Christian region, the Safra Marine resort north of Jounieh among them, under strict orders to spare Camille and Dany Chamoun and their families. That evening he proposed merging the militias into the Lebanese Forces under his command; Dany Chamoun left for exile the next day. Estimates of the dead range from about 70 (Ménargues) to 150-200, mostly civilians (Traboulsi; de Clerck and Malsagne give about 150, including 83 Tigers). Ménargues says Bashir code-named the operation 'Altalena'.

Hanf: Dany Chamoun left politics, but his father Camille, badly shaken by the loss of his party's militia, put the Lebanese Front's political unity first and remained its chairman.

In Ménargues's account Damascus rejected Takieddine Solh, finding him too lukewarm about Lebanese–Syrian friendship, and offered three names instead, Selim Hoss's among them.

Syrian troops guarded Riad Taha's and al-Lawzi's funerals, Fisk notes; the government condemned both killings but claimed not to know the culprits. Fisk counts both among journalists who crossed Syria.

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.

The meeting was called after Begin told the Knesset on 4 June of his promises to Lebanon's Christians. The Arab envoys asked Bashir Gemayel to break with Israel; he demanded guarantees in return (Hanf, Ménargues).