Palestinian political violence between two loosely defined factions: the side wishing to preserve the status quo, consisting primarily of Maronite militias, and the side seeking change, which included a variety of militias from leftist organizations and guerrillas from rejectionist Palestinian (nonmainstream PLO) organizations. The Lebanese civil war lasted until 1990 and resulted in an estimated 130,000 to 250,000 civilian fatalities and one million wounded. After Black September, the PLO and its offshoots waged an international campaign against Israelis. Notable events were the Munich Olympics massacre (1972), the hijacking of several civilian airliners (some were thwarted, see for example: Entebbe Operation), the Savoy Hotel
History of the Israeli–Palestinian conflict attacked Israeli civilian 'targets' like schools, buses and apartment blocks, with occasional attacks abroad—for example, at embassies or airports—and with the hijacking of airliners. The peak of the Palestinian terrorism wave against Israelis occurred in 1972 and took form in several acts of terrorism, most prominently the Sabena Flight 572 hijacking, the Lod Airport massacre and the Munich massacre. On March 15, 1972 King Hussein of Jordan unveiled his plan for a "United Arab Kingdom", which would have been a federation consisting of the Hashemite Kingdom of Jordan and a federal district in the West Bank which was formerly under