Al-Noumour, Noumour Al-Ahrar, Noumours, NLP Tigers) militia (1968 – 1991); the Christian Zgharta Liberation Army (ZLA, a.k.a. Al-Marada, Marada Brigade) militia (1967 – 1991); the Shia Muslim Amal Movement militia (1975 – present); the Shia Muslim Hezbollah guerrilla group (1985 – present); the Sunni Muslim Islamic Unification Movement (IUM, a.k.a. Al-Tawheed) militia (1982 – present); the Sunni Muslim Independent Nasserite Movement's Al-Mourabitoun militia (1975 – 1988); the Sunni Muslim Popular Nasserist Organization's National Liberation Army (NLA) militia (1975 – 1991); the Alawite Arab Democratic Party's Arab Red Knights (ARK) militia (1981 – 1991); the Druze Progressive Socialist Party's People's Liberation Army (Druze PLA) militia (1975 – 1991); the Arab Socialist Ba'ath Party's Assad Battalion militia (1966 – present); the Syrian Social Nationalist Party (SSNP) militia (1932 – present); the South Lebanon Army (SLA) (1978 – 2000); the official Lebanese Armed Forces (LAF) and the Internal Security Forces (ISF), led by the Lebanese government; the mainstream Palestinian guerrilla factions of the Palestine Liberation Organization (PLO) and the breakaway Rejectionist Front (present in Lebanon from 1968 to 1983); the Palestine Liberation Army (present in Lebanon from 1976 to 1982); the Syrian Army (present in Lebanon from 1976 to 2005); the Israel Defense Forces (IDF) (present in Lebanon from 1978 to 2000); in between, a plethora of irregular Lebanese armed groups that emerged from the wrecks of both the LNM and the Lebanese Front alliances, after their collapse in the early 1980s.