2003 invasion of Iraq 2003 invasion of Iraq The 2003 invasion of Iraq was the first stage of the Iraq War (also called "Operation Iraqi Freedom"). The invasion phase began on 20 March 2003 and lasted just over one month, including 21 days of major combat operations, in which a combined force of troops from the United States, the United Kingdom, Australia and Poland invaded Iraq. This early stage of the war formally ended on 1 May 2003 when U.S. President George W. Bush declared the "End of Major Combat Operations", after which the Coalition Provisional Authority (CPA) was established as the first of
Withdrawal of U.S. troops from Iraq Iraqi territory". The last U.S. troops left Iraq on 18 December 2011, in accordance with this agreement. In 2014, the advance of the Islamic State of Iraq and the Levant (ISIL) from Syria to Iraq's western provinces prompted the U.S. to intervene again, alongside other militaries, to combat ISIL. Immediately before and after the 2003 invasion, most polls within the United States showed a substantial majority supporting war, though since December 2004 polls consistently showed that a majority thought the invasion was a mistake. In the spring of 2007, surveys generally showed a majority in favor of setting a timetable