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The Iran-Iraq War began

On this day · 22 September 1980
45 sec read

Iraqi jets and tanks swept into Iran, opening one of the 20th century's longest and bloodiest conventional wars.

Verified · U.S. Department of State, Office of the Historian

On September 22, 1980, Iraqi armed forces invaded western Iran along the two countries’ shared border, opening the Iran-Iraq War. The Iraqi Air Force opened with surprise strikes on Iranian airfields, hoping to cripple Iran’s air force on the ground; a broad ground assault into the oil-rich province of Khuzestan followed.

Iraq’s leader, Saddam Hussein, bet on a quick, limited campaign against a neighbor still reeling from its 1979 revolution. The gamble failed. Iranian resistance stiffened, the front bogged down, and the conflict ground on for nearly eight years.

It became a war of attrition marked by trench fighting, missile attacks on cities, and the use of chemical weapons. Estimates of the dead range from around 500,000 to well over a million across both sides.

Saddam expected a sprint and got a marathon through barbed wire.

A United Nations-brokered ceasefire finally took hold in August 1988, leaving borders essentially unchanged.

8 yrs
duration
500k+
estimated dead
1988
ceasefire

Sources & references

2 references

Well-established. Corroborated by 2 independent sources.

1 U.S. Department of State, Office of the Historian government “On September 22, war between Iran and Iraq commenced with ground and air attacks on Iranian territory by Iraqi forces.” history.state.gov ↗
2 Encyclopædia Britannica Encyclopedia “Open warfare began on September 22, 1980, when Iraqi armed forces invaded western Iran along the countries' joint border.” britannica.com ↗
✓ Last reviewed Jun 7, 2026

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