They were fighting Saddam Hussein and his army.
Canadians did not participate in the Iraq-Iran War (1980-1988); US Forces patrolled the Persian Gulf during that conflict, to keep the Gulf open.
Iran was only involved in the First Persian Gulf War also known as the Iran-Iraq War and that war was resolved by armistice after a stalemate. Iran was not part of the Second Persian Gulf War (from 1990-1991) or the Third Persian Gulf War (from 2003-2011).
The region of the world where the war took place was in close proximity to the Persian Gulf.
The BP oil spill occurred in the Gulf of Mexico. The Gulf War oil spill occurred in the Persian Gulf in Kuwait.
why was the gulf war a success and why was it not
Which of the 3 Persian Gulf Wars are you referring to?
The most recent war in the Persian Gulf was the Iraq War of 2003-2011.
Over 500,000 Iranians and over 800,000 Iraqis fought during the war (1980-1988).
That is the Persian Gulf.
The Persian Gulf and the Gulf of Oman.
Many thousands died in the Gulf war.