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The United States begins the invasion of Iraq; coordinating a satellite-guided tomahawk cruise missile strike on Baghdad.American, British, Australian, Polish, and Danish military operations begin; ground troops move into Iraq
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2003 July - US-appointed Governing Council meets for first time. Commander of US forces says his troops face low-intensity guerrilla-style war.
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2003 August - Suicide truck bomb wrecks UN headquarters in Baghdad, killing UN envoy Sergio Vieira de Mello.
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2003 December - Saddam Hussein captured in Tikrit.
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2004 March - Suicide bombers attack Shia festival-goers in Karbala and Baghdad, killing 140 people.
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2004 April-May - Shia militias loyal to radical cleric Moqtada Sadr take on coalition forces.
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2004 June - US hands sovereignty to interim government headed by Prime Minister Iyad Allawi.
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2004 August - Fighting in Najaf between US forces and Shia militia of radical cleric Moqtada Sadr.
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2004 November - Major US-led offensive against insurgents in Falluja.
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2005 January - Some 8 million vote in elections for a Transitional National Assembly.
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2005 February - At least 114 people are killed by a car bomb in Hilla, south of Baghdad, in the worst single such incident since the US-led invasion.
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2005 April - Amid escalating violence, parliament selects Kurdish leader Jalal Talabani as president. Ibrahim Jaafari, a Shia, is named as prime minister.
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2005 May onwards - Surge in car bombings, bomb explosions and shootings: government puts civilian death toll for May at 672, up from 364 in April.
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2005 August - Draft constitution is endorsed by Shia and Kurdish negotiators, but not by Sunni representatives.
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2005 June - Massoud Barzani is sworn in as regional president of Iraqi Kurdistan.