If this is a reference to possible future Israeli-Iranian Conflict or the future American-Iranian Conflict, it is far more likely that the non-Iranian side will strike first. This is since the non-Iranian nations want to preserve a non-nuclear Iran, which may require more immediate action than Iran's current interests which typically involve funding proxies for its control of the Middle East (like Hezbollah and the Syrian government).
If this is a reference to the Iran-Iraq War of 1980-1988, Iraq fired the opening shot.
Saddam Hussein (Iraq) first attacked Iran in September 1980. However, a brief civil war started in Iran in 1978 and 1979 which the Revolutionary Guards (Pasdaran) regime won. No one really won the war. Iran and Iraq never really recovered and both are poor, war weary nations to this day.
Iran was attacked by its neighboring country of Iraq in 1980, leading to the Iran-Iraq War which lasted for eight years.
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).
in 1991 during the first gulf war.
Many historians agree that the Iran-Iraq War of 1980-1988 was the first Gulf War.
the Iran war
No, Imperial Germany did try to take Iran in the First World War, but failed. In the Second World War, the British Empire and the Soviet Union occupied Iran for the oil, there was no Nazi German attempt to take Iran.
The very first war was Iraq and Iran, not the one in the 1980's! This war was fought 2700 B.C.
The Iran-Iraq War began in 1980 and ended in 1988.
The Iran-Iraq war begun in 1980 and ended in 1988.
Saddam led Iraq and the Ayatollah Khomeini led Iran during the Iran-Iraq War (1980-1988).
Some historians consider the Iran-Iraq War 1980-1988 to be the first Gulf War.