Saddam Hussein was quickly arrested after the fall of Baghdad, and as he was about to face trial, his old rival Iran stepped forward and demanded that Saddam Hussein should not be tried by Iraqi courts, but should stand in international courts, where Iraqi and Iranian judges should jointly try.
Immediately after Saddam's arrest, Iran issued a statement saying that the crimes committed by Saddam Hussein and his supporters have gone beyond the framework of the Iraqi state, are of an international nature, and should be tried in public and by a team of judges jointly formed by Iraqis and Iranians. After the statement, Iraqi analysts believed Iran was using war-torn Iraq to defend its rights.
The two protagonists of the Iran-Iraq War have a huge dispute over the date of the war's start, and Iraq believes that the Iran-Iraq War began on September 4, 1980, when the two countries hurt each other on a 1,300-kilometer border. Iran believes that the war actually began on September 22.
The war lasted until July 20, 1987, and was known as the Forgotten War. The United Nations passed a resolution urging the two sides to quickly cease hostilities, which Saddam Hussein agreed to, while Iran refused, iran said, accepting the ceasefire was like drinking wine from a poisoned wine glass.
Iran demanded the immediate execution of Saddam Hussein on the grounds that his use of chemical weapons caused enormous harm to the Iranian people during the Iran-Iraq war, which Saddam himself denied. However, during the 1986 Iran-Iraq War, an Iraqi battlefield general once said that if we encountered thousands of insect infestations, we would definitely use pesticides.
Eventually, the use of chemical weapons also became a crime committed by Saddam Hussein.