Lebanese Civil War

Lebanon's political architecture rested on the 1943 National Pact, an unwritten agreement that assigned the presidency to a Maronite Christian, the prime ministry to a Sunni Muslim, and the speakership of Parliament to a Shia Muslim.[2] Parliamentary representation followed a six-Christians-to-five-Muslims ratio derived from the 1932 census — a census that was never officially updated.[2] As the Muslim population grew, particularly among the Shia, demographic realities increasingly diverged from the constitutional formulas that governed power, and demands for revision of the system intensified.[2]

Underlying causes of instability were numerous and interlocking. Wealth was concentrated unevenly, with the rural south, the Biqa Valley, and the Akkar region suffering economic neglect that drove waves of rural-to-urban migration.[2] A history of the period records that the cost of living doubled between 1967 and 1975, that Lebanon had 57,000 unemployed people in 1971 out of a population of roughly 1,250,000, and that 79 percent of Lebanese received less than the estimated minimum income for a decent living on the eve of the war.[6] Competition among family-based political dynasties, disputes over Lebanon's identity as either a Western-oriented or Arab-nationalist state, and a Lebanese Army divided along sectarian lines compounded the political fragility.[2]

The Palestinian armed presence became a defining destabilizing factor. Approximately 400,000 Palestinian refugees were registered with UNRWA in Lebanon, including people who had arrived after the 1948 and 1967 Arab-Israeli wars.[3] The 1969 Cairo Agreement formally permitted Palestinian camps and armed activity within Lebanese territory, and the arrival of Yasser Arafat and additional PLO forces following Black September in Jordan in 1970 further expanded Palestinian military power.[3] The PLO established what amounted to a state within a state, operating bases and training facilities and launching artillery and cross-border attacks against civilian communities in northern Israel.[7] Christian Lebanese feared that Palestinian military activity would provoke Israeli retaliation and ultimately undermine Lebanese sovereignty.[2] Israeli reprisals against Palestinian bases confirmed those fears and deepened communal anxieties on all sides.[2]

The immediate prewar crisis began not in Beirut but in Sidon, in February 1975, when fishermen threatened by a state-monopoly fishing company staged demonstrations.[2] The army was called in, clashes followed, and the death of Sunni populist leader Maruf Saad from wounds sustained during the fighting intensified opposition to the government.[2] Sectarian fighting between Maronite and Muslim army recruits during the episode confirmed widespread fears that the Lebanese Army would disintegrate if deployed in an internal conflict.[2]

The war began in Beirut on April 13, 1975. Unidentified gunmen opened fire near a Maronite church in Ayn al-Rummanah, wounding Phalange partisans.[6] Phalangist militiamen subsequently ambushed a bus heading toward the Tall al-Za'tar refugee camp, killing approximately 21 to 26 Palestinian passengers.[2][6] Fighting between Phalangists and Palestinian militiamen broke out the following day and rapidly expanded into a full-scale civil war.[2]

The assignment of responsibility for the initial violence was contested from the outset and has remained historically and politically disputed.[3] What is not disputed is that the incident unleashed forces that neither the Lebanese government nor its army could contain. The Lebanese Army's sectarian composition made it effectively unusable as an instrument of internal order, and the government found itself unable to impose authority on the proliferating armed factions.[7]

The war initially organized itself around two broad coalitions. The predominantly Christian, right-wing Lebanese Front included the Phalange of Pierre Jumayil, Camille Chamoun's National Liberal Party and its Tigers militia, the Marada Brigade, and other Maronite formations; its combined forces were estimated at approximately 30,000 fighters.[2] The Lebanese Front insisted that security and military deployment must precede any political reform.[6]

Opposing them was the Lebanese National Movement, a leftist, Muslim-led coalition headed by Kamal Jumblatt of the Progressive Socialist Party. It encompassed the Syrian Social Nationalist Party, Amal, communist and Nasserist organizations, Baathist factions, and numerous militias, and it was allied with and militarily reinforced by Palestinian organizations.[2] At times, approximately 20,000 Palestinian fighters fought alongside the National Movement.[2] The National Movement sought the abolition of sectarian quotas and a fundamental restructuring of the Lebanese political system.[6]

The Lebanese Army itself fragmented. Units with Muslim-majority soldiers in the Biqa, the north, and the south rebelled under Colonel Ahmad al-Khatib, forming a parallel Lebanese Arab Army financed by Libya and supported by Fatah.[6] A March 1976 coup attempt by Brigadier-General Aziz al-Ahdab, who seized the state television station and declared President Sulayman Franjiyeh removed, further illustrated the disintegration of state authority; Franjiyeh, backed by Syria, subsequently took refuge in East Beirut.[6]

The PLO's strategic interests were intertwined with those of the Lebanese left. Having lost its Jordanian base during Black September in 1970, the PLO sought to preserve Lebanon as a launching point for operations against Israel, while the National Movement sought to leverage PLO military strength to force domestic political change.[6]

The early fighting produced massacres of civilians and the physical partition of Beirut. On December 6, 1975 — a day that became known as Black Saturday — Phalangist roadblocks killed Muslim civilians; accounts place the toll at approximately 200 to 350.[2][6] In January 1976, Christian forces captured the neighborhoods of Karantina and Maslakh and massacred as many as 1,000 civilians.[2] Two days later, Palestinian and leftist forces attacked the Christian town of Ad Damur, killing between 200 and 500 Christians.[2] The Holiday Inn fell in the Battle of the Hotels on March 22, 1976, one of several landmark episodes marking the territorial fragmentation of Beirut.[6]

The front along Allenby Street hardened into the Green Line, a no-man's-land that divided Christian East Beirut from Muslim West Beirut and became one of the war's defining images — vegetation reclaiming the abandoned zone between the two sides.[2] The division was not merely symbolic; it physically separated communities, economies, and daily life for the duration of the conflict.

Syria's military intervention transformed the character of the war. President Hafiz al-Assad, having initially acted as a mediator, announced the entry of 6,000 Syrian soldiers into Lebanon on June 1, 1976; the number reached 15,000 within days, ultimately expanding to approximately 27,000 troops.[2][6] Syria intervened on the side of the Christians, calculating that a Lebanese National Movement victory would produce a radical leftist state hostile to Damascus, while an outright Christian victory might produce an independent Maronite ministate — either outcome threatening Syrian interests.[2] Syrian forces advanced toward Akkar, Zahleh, the Biqa, and Sidon, and by November 1976 had occupied most Muslim-held areas, including West Beirut and Tripoli.[2]

The Arab League's Riyadh Conference of October 16, 1976, and a subsequent Cairo meeting created the Arab Deterrent Force, giving pan-Arab legitimacy to what was in practice a Syrian military presence.[2] The force included symbolic contingents from Saudi Arabia, North Yemen, South Yemen, and the United Arab Emirates, but its approximately 30,000 troops were overwhelmingly Syrian.[2][6] In January 1977 the Arab Deterrent Force consisted of approximately 30,000 men, of whom 27,000 were Syrian.[2]

Israel developed ties with Christian Lebanese forces and supported the Army of Free Lebanon under Major Saad Haddad.[2] On July 19, 1976, Defense Minister Shimon Peres announced the Good Fence program, which provided humanitarian relief, sought to exclude non-Lebanese military forces from the border area, and helped consolidate a pro-Israeli southern Lebanese militia of approximately 3,000 men.[8]

On March 15, 1978, following a Palestinian terrorist attack in which operatives launched from Lebanon killed thirty-seven Israeli civilians,[2] Israel launched Operation Litani, sending more than 25,000 troops into southern Lebanon and occupying most of the area south of the Litani River.[2] The operation was estimated to have caused approximately 1,000 Arab civilian deaths and displaced roughly 100,000 people; about 40 percent of southern Lebanon's population was displaced and 80 percent of its villages were reportedly damaged or destroyed.[8] Eighteen Israeli soldiers were killed.[8]

UN Security Council Resolution 425, adopted on March 19, 1978, called for Israeli withdrawal, established UNIFIL, and assigned the force the tasks of confirming withdrawal, restoring peace and security, and assisting the Lebanese government in restoring effective authority.[2][8] Israel withdrew in stages but transferred a border enclave to Haddad's South Lebanon Army rather than placing the territory under Lebanese or UN control, effectively creating an informal security zone.[2][3]

The PLO's continued military presence in Lebanon, its shelling of northern Israeli communities, and a two-week Israel-PLO confrontation in July 1981 — temporarily halted by a ceasefire negotiated by U.S. envoy Philip Habib on July 24, 1981 — set the stage for a larger Israeli operation.[7] The immediate trigger for Israel's June 1982 invasion was the attempted assassination of Israeli Ambassador Shlomo Argov in London on June 3, 1982.[7][9] Israel's cabinet authorized strikes on terrorist positions in Lebanon on June 4, and on June 5 decided to launch Operation Peace for Galilee.[7] Israeli forces entered Lebanon at 11:00 a.m. on June 6, 1982, initially declaring an objective of placing Galilee settlements outside the range of terrorist forces in Lebanon.[7]

The operation's stated initial limits — a 40-kilometer advance, a 24-hour operation, avoidance of Syrian forces, and no approach to Beirut — were quickly overtaken by events.[2] Israeli forces overran PLO positions across southern Lebanon, destroyed Syrian installations in the Bekaa Valley, and reached Beirut by June 9.[10] Israeli officials subsequently described additional objectives: advancing toward the Beirut-Damascus highway, removing all foreign forces, dismantling the PLO's military and political infrastructure, and creating conditions for a Lebanese government strong enough to sign a peace treaty with Israel.[7] Critics within Israel, including Yitzhak Rabin, argued that the campaign had expanded well beyond its original security rationale.[7]

U.S. mediation led by Philip Habib produced the PLO's evacuation from Beirut between August 21 and September 1, 1982, under multinational supervision that included U.S. Marines and French and Italian units.[3] An official IDF communiqué reported that 14,398 terrorists, Palestine Liberation Army members, and Syrian forces left Beirut during the evacuation, along with 664 women and children.[7] The evacuation ended three days ahead of schedule, but armed conflict in Lebanon continued.[7]

In 1983, Israel and Lebanon signed an agreement terminating the state of war between the two countries.[10] The accord was repudiated by Lebanon a year later under Syrian pressure, and the country remained volatile.[10] Israel completed a phased withdrawal from Lebanon in June 1985 and established a security zone approximately nine miles wide in southern Lebanon, intended to shield Israeli communities in the Galilee from cross-border attacks.[10] Israeli soldiers continued to be killed inside the zone by terrorist groups supported by Iran and Syria, particularly Hezbollah.[10]

President-elect Bashir Jumayyil was assassinated on September 14, 1982, when a bomb destroyed the Phalange headquarters in Ashrafieh.[6] Israeli troops entered West Beirut the following day and surrounded the Sabra and Shatila Palestinian refugee camps.[3] On September 16, Defense Minister Ariel Sharon and Chief of Staff Rafael Eitan permitted Israel's Christian Phalangist allies to enter the camps to search for remaining PLO forces.[10]

Over the next two days, Phalangist militiamen killed hundreds of Palestinian civilians.[2] Casualty estimates vary. One account gives approximately 700–800 killed;[2] another cites almost 800;[3] and a third states that more than 1,000 Palestinians and at least 100 Lebanese were killed.[6] The Kahan Commission, Israel's government-appointed inquiry, found that the IDF had monitored Phalangist communications and provided illumination flares during the operation, and that Israeli commanders had not acted quickly enough after receiving reports of abuses.[2][7] The commission found Ariel Sharon indirectly responsible, concluding that he should have anticipated the danger of revenge killings given the Phalangists' well-documented hatred of Palestinians; Sharon subsequently resigned as defense minister.[10][6]

Hezbollah began taking shape in 1982 during the Lebanese Civil War, influenced by displacement caused by Israel's invasion, the Iranian Revolution, a split in the Amal movement, and Iranian support. Estimates of the initial Iranian Revolutionary Guard deployment to Baalbek vary between approximately 650 and 1,000 personnel.[2][6] Hezbollah publicly constituted itself on February 16, 1985, through an Open Letter to the Downtrodden in Lebanon and the World, and became the principal armed force resisting the Israeli security zone after Amal scaled back its own resistance activity.[6]

The period around Hezbollah's founding was marked by catastrophic terrorist attacks on Western targets. A suicide bombing at the U.S. Embassy in West Beirut on April 18, 1983, killed 63 people.[3] On October 23, 1983, simultaneous bombings of U.S. and French military headquarters killed 241 American personnel and 58 French personnel.[11][3] The World Jewish Congress states that several Hezbollah founding members had worked with Iran in connection with these bombings before the organization was formally constituted.[11] The U.S. Marines withdrew from Lebanon in 1984.[3]

The mid-to-late 1980s brought fragmentation, shifting alliances, and renewed bouts of intra-sectarian warfare. Amal took control of West Beirut in February 1984.[1] Beginning in 1985, the War of the Camps pitted the Shia Amal militia against Palestinian forces across multiple rounds of fighting.[1][3] In 1987, Palestinians, leftists, and Druze fighters fought Amal in conflicts that prompted further Syrian intervention; Syria occupied West Beirut that year.[1][3] Fighting between Hezbollah and Amal from 1988 to 1990 helped consolidate Hezbollah's position as a major force within the Shia community.[1]

When President Amin Gemayel's term expired in September 1988, he appointed General Michel Aoun — a Maronite Christian — as acting prime minister, in violation of the National Pact's convention that the position should be held by a Sunni Muslim.[3] Lebanon was effectively divided between rival Christian and Muslim governments.[3] In March 1989 Aoun declared a war of liberation against Syria and its Lebanese allies.[1] The economic toll of the entire conflict by this point was severe: bank deposits had fallen from $12 billion in 1982 to $3 billion in 1990, public debt had risen from LL 7 billion in 1981 to LL 35 billion in 1985, and militias were estimated to have expropriated at least 20 percent of state revenues.[6]

The path to resolution was organized by an Arab League committee chaired by Kuwait and including Saudi Arabia, Algeria, and Morocco, with U.S. backing.[6] Lebanese parliamentarians convened in Taif, Saudi Arabia, and signed a Document of National Understanding on October 22, 1989, which the Lebanese Parliament ratified on November 5.[1][6] The Taif National Unity Charter restructured Lebanon's political system: it reduced presidential powers in favor of the prime minister and Council of Ministers, increased Parliament from 99 to 128 seats, and mandated equal Christian-Muslim representation in parliament and the cabinet.[1][5] The presidency remained reserved for a Maronite Christian and the prime ministry for a Sunni Muslim.[1] The agreement called for the eventual abolition of political sectarianism and defined Lebanon as Arab in identity and as the final homeland of the Lebanese.[6]

The Taif provisions required all Lebanese and non-Lebanese militias to disband and transfer their weapons to the Lebanese government within six months of the agreement's implementation.[12] Every Lebanese displaced since 1975 was granted the right to return home, and a framework was established for extending Lebanese government sovereignty across the country.[12] Syrian forces were to be redeployed under a joint Lebanese-Syrian arrangement within a period not to exceed two years.[12]

René Moawad was elected president on November 5, 1989, and assassinated by a car bomb in Beirut on November 22.[3][6] Ilyas Harawi succeeded him. In October 1990, Syrian forces attacked General Aoun's positions at Baabda; Aoun took refuge in the French Embassy and subsequently went into exile.[1][6] Parliament and the new president approved constitutional amendments embodying the Taif reforms in August 1990.[3] An amnesty law was passed in March 1991 and most militias were dissolved in May 1991 — with Hezbollah and Palestinian militias remaining significant exceptions. Hezbollah claimed that its weapons served continuing resistance against the Israeli military presence in southern Lebanon.[3][4]

Casualty estimates for the Lebanese Civil War vary significantly, reflecting the difficulty of documentation in a multi-front conflict spanning fifteen years. Estimates include more than 100,000 people killed and another 100,000 permanently disabled;[3] approximately 150,000 deaths for the 1975–1990 conflict;[4] and as many as 130,000 deaths by late 1987, with the ultimate total expected to be higher.[2] Another detailed estimate put the toll at 71,328 killed and 97,184 injured, with 157,500 Muslims and 670,000 Christians displaced through sectarian cleansing and 894,717 Lebanese driven out of the country.[6]

Displacement on a massive scale accompanied the killing. Up to one-fifth of Lebanon's prewar resident population — about 900,000 people — was displaced, and perhaps 250,000 emigrated permanently.[3] Between 17,000 and 20,000 people remained missing or unaccounted for.[3]

Property destruction was catastrophic. Damage was estimated at approximately US$100 billion.[2] The 1982 Israeli invasion alone damaged or destroyed approximately 40,000 homes, 85 percent of schools south of Beirut, factories, highways, ports, and public utilities.[2] One account estimated that the invasion killed approximately 20,000 Lebanese and Palestinians and contributed to Hezbollah's rise among Lebanon's Shia population.[1]

Lebanon's Jewish community, numbering an estimated 20,000 in 1948, had already declined sharply before the war.[13] Approximately 1,800 Jews remained during the 1975–1976 fighting.[14] The community was centered in Beirut's Jewish Quarter of Wadi Abu Jamil, which lay along a contested boundary and contained the main synagogue, the Jewish community building, and the Alliance Israélite Universelle school.[15]

During the 1975–1976 fighting, combat around the Jewish Quarter damaged Jewish homes, businesses, and synagogues.[14] Most of the remaining Jewish population emigrated in 1976, fearing that the growing Syrian presence would restrict their freedom.[14] The Magen Abraham Synagogue, built in 1926, was seriously damaged during the civil war; looters stole its Torah ark and prayer benches and gutted its electrical system.[14] The synagogue stood on the battle lines dividing Beirut, was abandoned for approximately 30 years, and remained filled with broken glass, empty bottles, and shattered roof bricks until restoration work later began.[16]

A communal history estimated that the Jewish population stood at about 1,800 to 2,000 after the Yom Kippur War and that all but about 400 left during nineteen months of intense fighting. It reported that perhaps a dozen Jews died, generally from indiscriminate shelling and urban combat rather than because they were targeted as Jews.[15] PLO forces at one point protected Jewish refugees in the Wadi Abu Jamil synagogue, bringing them food and supplies.[15] The conflict also produced targeted violence against Jewish community leaders: Albert Elia, secretary-general of the Jewish community, was abducted in 1971 and later died in a Syrian prison, according to available accounts.[17] In 1984, Raoul Sobhi Mizrahi was killed, and in 1984–1985 several other community members — including Salim Jammous, Isaac Sasson, Elie Khallak, Haim Cohen, and Elie Srour — were kidnapped, with no definitive public resolution for several of the cases.[17] By 2020, only 29 Jews remained in Lebanon, while 4,062 Lebanese Jews had emigrated to Israel since 1948.[13]

The Taif settlement ended active large-scale fighting but left central tensions in Lebanese politics unresolved. The confessional allocation of the three highest offices was preserved, and equal Christian-Muslim parliamentary representation replaced the old six-to-five ratio.[3] Hezbollah and Palestinian militias remained important exceptions to postwar militia dissolution; Hezbollah maintained that its armed forces were engaged in resistance to the Israeli military presence in southern Lebanon.[3][4] Syrian forces remained in Lebanon long after the Taif timetable, withdrawing only in 2005 after the assassination of former Prime Minister Rafik Hariri helped galvanize opposition to their presence.[3][4]

Sectarian cleansing and forced displacement altered Lebanon's demographic geography, while the involvement of Syria, Israel, Iran, Palestinian organizations, and Western states demonstrated the extent to which the conflict had become internationalized.[2][4]

For Israel, the war's legacy was mixed. Operation Peace for Galilee expelled the PLO from Beirut and dismantled its state-within-a-state infrastructure.[10][7] At the same time, Israel's military presence contributed to Shia mobilization and Hezbollah's rise.[1] The security zone Israel maintained in southern Lebanon from 1985 until its withdrawal in 2000 became an attritional conflict in which Israeli soldiers were repeatedly killed by Hezbollah and other terrorist groups backed by Iran and Syria.[10]

The Taif agreement crystallized the principle of "no victor and no vanquished" — a formula reflecting the war's indeterminate military outcome and negotiated redistribution of political power.[1] Lebanon's confessional system was reformed but not abolished, while Hezbollah's armed status and the durability of sectarian power-sharing remained unresolved.[1][4]

The Lebanese Civil War has generated substantial historiographical controversy, reflecting the conflict's complexity and the political stakes attached to its interpretation. Accounts differ in emphasis: some foreground Lebanon's internal socioeconomic and sectarian contradictions, including extreme inequality, the confessional system, and the absence of an updated census; others give greater weight to the PLO's relocation to Lebanon after 1970 and to the Israeli-Palestinian conflict on Lebanese soil.[2][6] The verified sources treat both domestic and regional factors as significant but assign them different relative weight.[1][7]

The immediate trigger of the April 1975 violence is similarly contested. Accounts describe the initial attackers as unidentified or leave their identity unresolved, while the reported bus-ambush death toll ranges from approximately 21 to 26.[2][6] The conflict's endpoint also varies by source: some date the war through Aoun's defeat in October 1990, while others emphasize the Taif process of 1989 or the dissolution of most militias in 1991.[1][3]

Casualty estimates remain among the most contested elements. Published totals range from approximately 71,000 to 150,000 deaths, with no authoritative comprehensive breakdown by faction, sect, nationality, or period.[4][6] Figures for individual incidents, including Sabra and Shatila and Black Saturday, also vary across accounts.[2][3] Interpretations of Syria's and Israel's interventions likewise differ: some sources emphasize strategic self-interest and the expansion of the war, while others emphasize efforts to contain rival forces or protect civilians from cross-border terrorism.[2][10]