January 1975 saw heavy Israeli attacks on the South. Israeli forces razed Kfar Chouba, a border village, about a week after 7 January (Hanf), and Palestinian commandos shelled army positions in Tyre during border clashes with the Lebanese army (de Clerck and Malsagne). The figures for 3 January come from contemporary press reports.

Antoine Khuraych headed the Maronite Church from his election on 3 February 1975 (enthronement 9 February) until 1986, styling himself the 'patriarch of dialogue'.

On 11 March Brigadier-General Aziz al-Ahdab, Beirut garrison commander (retired, says Traboulsi), seized the television station, named himself interim military governor and called for Frangieh's resignation and an early election. Few troops stood behind him and Syria opposed him: on 15 March PLA and Saiqa units under Syrian control blocked his men and Khatib's Lebanese Arab Army on their way to Baabda. Backed by Chamoun, Gemayel and President Assad, Frangieh refused to go.

Hanf writes that once Jisr al-Pasha fell on 1 July the Palestinians struck in the north, taking coastal Chekka from Tripoli by way of the Koura, with massacres, looting and arson. A Lebanese Front counter-attack with army tanks reached Tripoli's outskirts.

Hanf has the Syrian army moving again only once Tal al-Za'tar had fallen, increasing pressure on the encircled Palestinian and leftist forces in the Upper Metn; these were expelled at the end of September.

Talks in France with the government and Mitterrand's opposition left Jumblatt sure that France could do nothing in Lebanon against Syrian and US opposition (Traboulsi). His tour, by boat from encircled West Beirut to Cyprus, then Cairo, Algiers and Paris, sought Arab contingents to offset the Syrians.

Ratified by an Arab summit in Cairo on 25 October, the Riyadh decisions required all parties to surrender heavy weapons and the Palestinians to return to the zones granted by the 1969 Cairo Agreement, and created a 30,000-man Arab Deterrent Force under President Sarkis, its largest contingent by far, 25,000-27,000 men, being the Syrian troops already in Lebanon. Saudi Arabia had sent the invitations on 15 October; the leaders of Saudi Arabia, Kuwait, Egypt, Syria and Lebanon met the PLO chairman in Riyadh on 16, 17 or 18 October, depending on the historian. The cease-fire's start is dated 16 October (Hanf), 21 October (Traboulsi) or 15 November (de Clerck and Malsagne).

De Clerck and Malsagne report that Eddé went into exile in Paris after surviving three attempts on his life, one of them outside his home.

Sami al-Khatib took over the ADF from Ahmad al-Hajj, who never won Syria's trust, and led it until 1983.

Vance's airport motorcade skirted Sabra and Chatila after a Beirut visit, dated by Fisk to autumn 1977, to hear the government's views on the Palestinians' future.

By now Syria was fighting on the Palestinians' side. Hanf says the clashes ended once the Arab Deterrent Force's Saudi and Sudanese contingents deployed between Chiyah and Ain el-Remmaneh.

Hanf writes that the Lebanese Front was left with an enclave of roughly a tenth of Lebanon once Syrian troops had moved into the northern Christian mountains, Koura, Batroun and the coast as far as the Madfoun bridge. Frangieh gave Kataeb members in the north until the month's end to give up their weapons and quit the party, or else leave.