The First Gulf War (called the Iran-Iraq War by Western media at the time) was a large war fought between Iran and Kurdistan on one side, and Iraq on the other. The war was fought mainly by using chemical weapons, trench warfare, and (for the Kurdish militants) guerrilla tactics. The war was the result of Iraq's invasion of Iran on 22 September 1980 following a long history of border disputes and fears of Shia insurgency among Iraq's long suppressed Shia majority influenced by Iran's Islamic revolution. Although Iraq hoped to take advantage of revolutionary chaos in Iran and attacked without formal warning, they made only limited progress into Iran and within several months were repelled by the Iranians who regained virtually all lost territory by June 1982.
Although Iraq was hopeful to regain these areas by 1983 the sudden drop in foreign military aid from the Western nations due to Doomsday had hindered these efforts. To make matters worse with most of northern Turkey destroyed, a once suppressed Turkish Kurdistan had joined the war on Iran's side in order to reunite with Kurdish populated areas of Iraq. Although initially using chemical weapons against Iran, after being unhindered by the now non-existent superpowers and taking large areas of Iran, the Iranians would later start supporting insurgencies throughout the lost Iranian lands. An opportunity for revenge quickly presented itself when Iraq started to demand that Kuwait became another Iraqi province. Seeing their opportunity, the MLA detonates a dirty bomb in Baghdad during one of Hussein's speeches, killing top ranking leaders, including Saddam. The regular army would also help, quickly taking over lost territory and even taking over some Iraqi territory.
Kurdistan would soon break away as well, being recognized by Iran soon thereafter. Iraq dissolved into several other states in late 1990 and acknowledged Iranian gains.