Frangieh appointed Salam prime minister for the fourth time on 13 October 1970. This administration, which lasted until 25 April 1973, was his longest. He fell out with Frangieh and resigned as prime minister in the wake of an Israeli commando raid in Beirut, which killed three Palestinian leaders, in protest against Frangieh's refusal to dismiss the army commander, General Iskandar Ghanem, for negligence. Salam declared that he would not accept the post of prime minister again. During the civil war Salam's motto was "One Lebanon, not two."