Indeed. 40ish years ago. And now they'll have more formally recognized control over it than they ever have.
https://en.wikipedia.org/wiki/Iran%E2%80%93Iraq_War
"The Iran–Iraq War began with the Iraqi invasion of Iran in September 1980. After eight years of conflict, both countries accepted a ceasefire deal brokered by the United Nations, which became effective in August 1988. The war caused around 500,000 deaths (excluding numbers from the related Anfal campaign), making it the deadliest conventional war ever fought between regular armies of developing countries."
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"Iraq was aided by the National Council of Resistance of Iran, the United States, the United Kingdom, the Soviet Union, France, Italy, Yugoslavia, and most Arab countries."
https://en.wikipedia.org/wiki/Tanker_war
"The tanker war, part of the larger Iran–Iraq War, was a series of military attacks by Iran and Iraq against merchant vessels in the Persian Gulf and Strait of Hormuz from 1981 to 1988. Iraq was responsible for 283 attacks. Iran accounted for 168."
They are not getting control over it. Ever.