I'd been looking for a history of the Lebanese civil war for a while, and found Fisk's Pity the Nation more or less unreadable, both due to its verbosity and the purpleness of its prose. Mackey very helpfully states at the start, "This is not a history of the Lebanese civil war." Lucky for us she is lying, and it's a totally serviceable introduction to the war: why it began, why it continued, who the main actors were, and how they related to each other.
While it's fresh in mind, and for myself as much as anything, the basic story as laid out here is:
* Lebanon was by the Ottoman era an unusually diverse subsection of the empire, with significant Shi'a, Druze, and Christian minorities. The Christians in particular welcomed military protection from the French from the 19th century onward, culminating in the French mandate post-WWI. It was separated from the rest of Syria because of a Christian desire not to be overwhelmed in a Muslim-majority state; Druze and Shi'a tacitly shared this goal.
* After rejecting the Vichy occupiers in favor of the Free French in the middle of WWII, the major ethnic factions came to a modus vivendi in 1943, where they agreed to an independent state with a Christian president, a Sunni prime minister, and Shi'a speaker of parliament. "Christian Lebanese pledged their respect to Lebanon’s Arab character and promised to reject any formal alliance of protection with a Western power. Muslims, in return, agreed to accept Lebanese sovereignty and to shun any attempt to integrate Lebanon into a broader Arab or Islamic state."
* The ensuing nation was inherently unstable and Shi'a in particular were economically and politically cut out of the deal. Palestinian refugees post-1948 endured second-class treatment and disrupted the demographic balance. But tourism and finance took off and at least some segment of the population got very rich.
* While not the first thing to threaten the balance (1948 and Nasserism did beforehand), the Six-Day War was the major turning point. The Palestinian refugee population spiked, and the PLO developed into a major fighting force as the Arab world realized they couldn't defeat Israel in normal combat but maybe could through terrorism. Arafat began building a state-within-a-state in southern Lebanon and attacking Israel which periodically invaded to retaliate.
* The situation worsened after the Black September civil war in Jordan in 1970, after which King Hussein expelled Arafat and the PLO into Lebanon permanently, making it the PLO's only base of operations.
* PLO impunity and arrogance, and their tendency to provoke Israeli incursions, gnawed at Maronites, as did the shifting demographic balance. In 1975 this spills into open massacres between the PLO and Ketaeb (the Phalange), by then the major Christian militia run by Bashir Gemayel. The war is on.
* Beirut is divided, there are floor-by-floor fights for control of hotels. Behind the Palestinians are a variety of mostly Sunni leftists (Nasserists, Communists, etc.) as well as the Druze Popular Socialist Party, driven by Kamal Jumblatt's ideological convictions.
* Fearing that a leftist victory would destabilize the country and invite a full-on Israeli invasion, Syria's Hafez al-Assad intervenes on the side of the Christians, baffling anyone who knew him as a secular Arab nationalist and socialist. He effectively ends the war temporarily. He kills Jumblatt, temporarily moving the Druze off the board.
* Once in Lebanon, though, Syria moved away from the Christians in favor of developing Muslim allies. Feeling abandoned, the Christians continue to arm up and ally with Israel. "Between 1977 and 1982, a sullen three-way stalemate existed among the Christians, grouped behind the Lebanese Forces and armed by Israel; the alliance of the left, the remnants of the National Movement reinforced by the PLO; and Syria."
* Amid the stalemate, Israel continues to periodically invade, most notably in the 1978 Litani Operation, earning the wrath of the mostly Shia population in the South, which has yet to become a major force in the war.
* In 1982, newly appointed Israeli defense minister Ariel Sharon has a chance to conduct a full-scale invasion of Lebanon, using a failed PLO assassination attempt against an Israeli ambassador as a causus belli. He goes far beyond the south and into Beirut. To save his own troops, he conducts massive bombing operations, "saturation bombing on the scale of the World War II attack on Dresden."
* US diplomat Philip Habib negotiates an evacuation of the PLO, under the pressure of the bombings. Arafat and the organization leave for Tunis. Remaining Palestinians in Beirut are largely women, children, and old men. A Multinational Force (MNF) of US and other troops help with the evacuation.
* A key part of the Israeli plan is installing Bashir Gemayel as president, ensuring they have a close ally in charge of the country. They succeed in getting parliament to elect him. Shortly thereafter he is assassinated, we now know on the orders of Syria/Assad. In reprisal, the Phalange conducts the Sabra and Shatila massacres, with IDF support. "The inhabitants of Shatila were mostly the young and old and the wives, mothers, and sisters the fedayeen had left behind under Western assurances of their safety." The US and allies send another Multinational Force in response to the atrocities. Israel retreats to the south.
* Syria and their new allies, the Druze (now under Jumblatt's son Walid), act to undermine the Israel/Christian alliance, now headed by new president Amin Gemayel, Bashir's less hot-headed older brother. They begin shelling from the mountains. Gemayel successfully gets the US to have Navy ships fire on Druze positions, killing numerous civilians, many of them (importantly) Sh'ia.
* Incensed by years of neglect and discrimination and newly empowered by the Iranian Revolution, Sh'ia political movements had been quiet but growing in the early war. Two major factions emerged: Amal (founded by a cleric but mostly secular, want one-person one-vote instead of powersharing), and Hezbollah (openly theocratic, backed by Iran and literal IRGC soldiers).
* Shi'a radicals (probably Hezbollah) blow up the Multinational Force barracks, killing 307 people, 241 of whom are US military. "British prime minister Margaret Thatcher, through an aide, affirmed, 'By attempting to bomb the Multi-National Force out of Lebanon, the extremists … have in a perverse way confirmed the success of the force in helping stabilize the country.'" (What the fuck?) Reagan withdraws after Muslim forces take the old hotel district in Ras Beirut.
* Hezbollah begins a string of hostage-takings of Westerners and murders Malcolm Kerr, Steve's dad and the American University in Beirut president. It builds alliances with Palestinian groups, united by a burning hatred of Israel.
* Around 1983/1984, Syria begins taking action against Arafat (who has returned from Tunis to Tripoli) and the PLO, first by funding a Fatah splinter group run by Abu Musa, who gets Arafat to leave again. By 1985, PLO fighters are coming back, so Syria backs Amal to attack refugee camps in what becomes known as the "camp wars," culminating in mass starvation and cannibalism within the camps. In 1987, the First Intifada breaks out and Amal stops attacking Palestinians in solidarity. Syria backs Abu Musa again to keep on the pressure.
* In 1984, Amal has emerged as the most powerful actor in the country and sees an opportunity to seize it entirely. This requires dislodging Druze and Palestinians from their positions, as well as fighting their fellow Sh'ia in Hezbollah. This pushes the Druze and Palestinians into an alliance that repels Amal in the mountains. Syria is forced to watch as Amal and the Druze, who are both supposed to be its proxies, kill each other.
* After the camp wars end with the intifada, fighting heats up between Amal and Hezbollah in Beirut in the "war of the brothers," prompted both by territorial ambitions and by Hezbollah's support of the Palestinians that Amal had assaulted.
* Amin Gemayel cannot be successfully replaced as president in 1988 because parliament cannot agree on a choice. He anoints his preference, Gen. Michel Aoun, as acting president, and prime minister Selim Hoss claims the presidency as well. Effectively two administrations are coexisting, one recognized by the Christians and Israel, and the other by Muslims and Syria.
Mackey's book cuts off here. I wish in the 2006 edition she had added even a short chapter giving us another two years, because the war would end in 1990 under the terms of the Taif Agreement, accepting Syrian hegemony for the time being (and until 2005, it would turn out) and modifying the power-sharing deal of 1943.
I also wonder about the reliability of some of her anecdotes. During the 1975 War of the Hotels, did a retreating Maronite soldier really play "Yesterday" on the Holiday Inn's lobby piano? Is there really a t-shirt of "the cartoon character Garfield, defiantly clutching a Lebanese flag in one hand and a rifle in the other" and the inscription "I survived Beirut"? If so, can I buy one?
Overall though it gets the job done. It's a baffling conflict, full of betrayals and alliance shifts and ill-fated foreign interventions and players who suddenly emerge and change everything (like the Shi'a in 1983). You can't write an entirely non-confusing book about it, but this is about as clear as I think one can hope to be. One of the goals I set out for myself was "understand why it's so crazy that Michel Aoun and Hezbollah are allies as of the late '00s" and I think I get that now.