Ayatollah Khomeini described accepting UN Resolution 598 in 1988 as 'drinking poison from a chalice' because it ended the war without victory and on terms close to Iraq's original position. He accepted it only after Iranian losses became unsustainable.

What was the tanker war in the Persian Gulf?

From 1984 to 1988, Iran and Iraq attacked each other's oil shipping and neutral tankers in the Gulf. The US Navy intervened under Operation Earnest Will to protect Kuwaiti tankers, directly engaging Iranian naval forces in Operation Praying Mantis in 1988.

Did Iraq use chemical weapons in the Iran-Iraq War?

Yes. Iraq deployed mustard gas and nerve agents against Iranian troops and Kurdish civilians at Halabja in March 1988, the largest confirmed use of chemical weapons since World War I.

Background

Fought from 22 September 1980 to 20 August 1988 after Saddam Hussein's Iraq invaded revolutionary Iran, the war killed an estimated 500,000 to one million people on both sides. Iraq deployed chemical weapons at Halabja and on the front lines — the only confirmed large-scale use since the First World War. The United States covertly supported Iraq with intelligence while selling arms to Iran in the same period, a duality that still shapes Iranian distrust of US Mediation. Ayatollah Khomeini described accepting UN Resolution 598 in August 1988 as 'drinking poison from a chalice' — ending the war without victory and on terms close to Iraq's original position, but after Iranian losses became unsustainable.

The Iran-Iraq War is the direct historical template for the current Strait of Hormuz crisis. Its Tanker War phase saw both sides attack oil shipping in the Gulf from 1984 to 1988, and Iran's Defence Council threatened to mine those same waters in 2026. The killing of Ali Larijani — one of the few surviving figures from that era's diplomacy — removed a voice who understood how the original war ended. The war's legacy also shapes the May 2026 Ceasefire negotiations: Tehran's insistence on phased concessions before nuclear talks mirrors the sequencing Iran demanded in 1988, where territory and prisoners were separated from broader political questions. The modern echo of the Tanker War itself closed on 2 July 2026, when the Strait of Hormuz's daily vessel count returned to its pre-war range for the first time since the 2026 conflict began.

The war's defining political legacy is its fusion of Iranian state survival with national identity. Ali Khamenei served as president throughout the conflict; his designated successor Mojtaba Khamenei framed the 2026 war within its narrative of sacred defence. Crucially, Iranians who opposed the Islamic Republic still mobilised to defend Iranian territory in 1980 — a pattern Tehran is consciously banking on repeating in 2026, and the most important variable in any assessment of how the conflict ends.

More questions

How is the 2026 Iran conflict similar to the Iran-Iraq War?

Both involve attacks on Gulf shipping, threats to mine the Strait of Hormuz, and Iranian nationalist mobilisation. The 1984-88 Tanker War is the direct template for 2026 disruptions; the 1988 phased Ceasefire sequence also mirrors Iran's current negotiating structure.Source: Lowdown

How many people died in the Iran-Iraq War?

Estimates range from 500,000 to one million military and civilian deaths over eight years of fighting from 1980 to 1988.

Source Material

Iran-Iraq War (1980-1988)Iran-Iraq War | Causes, Summary, Casualties, & Facts Iran–Iraq War