A 1980-88 war of trenches, cities and tankers that killed hundreds of thousands and ended with UN Resolution 598 -- no triumphant peace.
Educational history. Casualty figures are documented ranges. This is not operational advice, a ranking of nations, or a how-to for weapons or coups.
Iraq invaded Iran on 22 September 1980, hoping to seize the Shatt al-Arab and a disordered post-revolutionary Iranian state. The Islamic Republic survived the first winter; the war then became an eight-year struggle of trenches, human-wave assaults, missile strikes on cities, and a "tanker war" in the Persian Gulf.
About 500,000-1 million people died, scholarly range, the majority Iranian in many estimates, with Iraqi losses also enormous. Iraq used chemical weapons against Iranian forces and, in 1988, against Kurdish civilians at Halabja. The UN Security Council's Resolution 598 (1987) framed a ceasefire that both sides accepted in 1988, effective 20 August.
Neither capital got the political victory it had promised. Saddam Hussein's Iraq emerged militarised and indebted -- a prelude to the 1990 Kuwait invasion. Iran's "Sacred Defense" became a founding myth of the Islamic Republic. English-language memory is thin beside Vietnam or 1991; for the Gulf, this was the longer, bloodier war.
Deep introduction
1980-88 fused a river-border dispute, two authoritarian projects, and great-power tilt -- without a 1945-style settlement.
Saddam Hussein read the 1979 Iranian Revolution as weakness. The 1975 Algiers Agreement on the Shatt was torn up. Iraqi forces took Khorramshahr and failed to take a knockout; Iranian resistance and mobilisation surprised Baghdad.
Foreign states tilted: many Arab capitals and Western suppliers backed Iraq as a container of the revolution, while Iran was isolated.
By 1982 Iran had expelled most invaders and faced a choice: stop, or carry the war into Iraq. Khomeini's government chose to continue toward Basra and a political end in Baghdad that never came.
Basra's approaches (including the 1986 Faw seizure) became the war's grinding southern hinge.
The "war of the cities" used missiles and air raids on Tehran, Baghdad and others. The tanker war drew in US reflagging of Kuwaiti ships (1987) and the 1988 shoot-down of Iran Air 655 -- a civilian airliner disaster inside the naval melee.
Chemical attacks are documented; this page records them as crimes and facts, not as a method.
Iran accepted 598 in July 1988 after battlefield reverses and isolation -- Khomeini compared it to drinking poison. A ceasefire is not a peace treaty; prisoners and the Shatt remained disputed for years.
Iraq's later Kuwait war (1990) is a sequel of debt, army size, and misread US signals -- a different file that this war helps explain.
1980-1988: invasion, trenches, tanker war, Halabja and UN Resolution 598.
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02Iranian and Iraqi armies and the Gulf naval melee -- historical, not a manual.
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03Khuzestan, Basra approaches, Faw and the tanker war as history.
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04About 500,000-1 million dead, scholarly range, plus chemical crimes.
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05Saddam, Khomeini, Rafsanjani, UN diplomats and named perpetrators.
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06Sacred Defense myth, Iraqi debt, and the road to 1990.
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07Thin English canon, Iranian Sacred Defense, Halabja, diaspora rites.
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