Likely charges against Saddam
The former Iraqi leader Saddam Hussein will almost certainly stand trial in some form or another for a catalogue of atrocities his regime is accused of committing over three decades. BBC News Online looks at some of the key charges he could face.
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Iran-Iraq war
In 1980, after a series of border skirmishes following Iran's Islamic revolution, Iraq invaded Iran.
The ensuing bloody war claimed the lives of at least one million people.
Iraq used nerve gas against the Iranians
The Iranian Government is preparing a comprehensive complaint against Saddam Hussein for "crimes" against the Islamic republic, calling for the captured former Iraqi leader to be tried before an international court.
Some Iranian observers say the US should also be in the dock with Saddam Hussein, as Washington supported him at the time of the war.
An estimated 20,000 Iranians were killed by Iraqi mustard gas or by nerve agents during the conflict.
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Attacks on Iraqi Kurds
In 1988, when Kurds in northern Iraq were pushing for autonomy, Iraq forces used cyanide gas against the Kurdish town of Halabja, killing an estimated 5,000 civilians.
He also gassed his own people
During the Anfal campaign, from February to September of that year, Iraqi soldiers rounded up more than 100,000 Kurds, mostly men and boys, and executed them.
General Ali Hassan al-Majid, known as Chemical Ali, had previously used chemical weapons to push Kurds from their villages.
The persecution of the Kurds had started at least a decade before. The Iraqi regime had destroyed thousands of Kurdish villages and had the population placed in "resettlement camps".
Tens of thousands of Kurds were killed or imprisoned and a million fled when Iraq crushed an uprising after the 1991 Gulf War.
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Invasion of Kuwait
In August 1990 Saddam Hussein sent Iraqi troops into Kuwait which led to the Gulf War in January 1991.
Hundreds of oil wells were set alight
Iraqi soldiers are alleged to have tortured and summarily executed detainees and on retreating looted Kuwait City and seized hundreds of Kuwaitis, taking them back to Baghdad.
Iraqi soldiers also set alight more than 700 oil wells and opened pipelines to let oil pour into the Gulf and other water sources.
After the conflict, Baghdad took revenge on the Shia Muslims in southern Iraq who, as well as the Kurds, rose up against the regime.
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Killings, persecution and torture
Evidence has emerged of 270 mass graves across Iraq which are believed to hold the remains of possibly tens of thousands of people.
The UN Commission on Human Rights condemned the Iraqi regime in 2001 for "widespread, systematic torture and the maintaining of decrees prescribing cruel and inhuman punishment as a penalty for offences".
The land of the Marsh Arabs was destroyed
Torture methods have included hanging, beating, rape and burning alive.
Thousands of Shia Muslims arrested on charges of supporting the 1979 Iranian Revolution have never been accounted for.
During the 1990s, to punish the Marsh Arabs for allegedly giving sanctuary to rebels fighting his regime, Baghdad destroyed vast areas of their wetlands which had sustained a way of life dating back around 5,000 years.
In 1996 two of Saddam Hussein's sons-in-law were executed after defecting to Jordan the year before.
The two men had returned to Baghdad in February 1996 after being given false guarantees of safety.
When Saddam Hussein took power in 1979, hundreds of senior party members were imprisoned or executed.
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UN inspections
Saddam obstructed weapons inspections
During the 1990s, he defied the United Nations and the international community by failing to comply with international weapons inspectors over the issue of weapons of mass destruction.
Saddam Hussein may also be put on trial for his possible role in the insurgency against the coalition troops in Iraq now.