The Mountain War (Arabic: حرب الجبل | Harb al-Jabal), also known as the War of the Mountain and Guerre de la Montagne in French, was a subconflict between the 1982–83 phase of the Lebanese Civil War and the 1984–89 phase of the Lebanese Civil War, which occurred at the mountainous Chouf District located south-east of the Lebanese Capital Beirut. It pitted the Christian Lebanese Forces militia (LF) and the official Lebanese Armed Forces (LAF) against a coalition of anti-government Muslim leftist militias led by the Druze Progressive Socialist Party (PSP), backed by the Palestine Liberation Organization (PLO) and Syria. Hostilities began when the LF and the LAF entered the predominantly Druze Chouf district to bring back the region under government control, only to be met with fierce resista