Methodology: In our attempt to identify the coalition members, ProCon.org has found discrepancies in the reporting from various agencies and governmental organizations. These variations include issues such as how a country is identified as a coalition member, whether the country committed to the conflict or only to the post-war reconstruction, and the timeframe of when the country's forces entered or exited Iraq. ProCon.org has, therefore, only relied on three official US government sources (listed below) for simplicity and to minimize the amount of discrepant information. We included a country as a coalition member for a year even if the country was only in the coalition for a small portion of that year.
The dates in parentheses indicate when the country's forces were withdrawn from Iraq. We used the specific withdrawal dates whenever that information was provided by the sources we referenced.
* March 27, 2003: Although the White House specified these 49 countries as coalition members in a Mar. 27, 2003 news release titled "Coalition Members" on the White House website, the withdrawal dates for 17 of these countries are not found within the two US government sources ProCon.org cites below. Those 17 countries are: Afghanistan, Angola, Colombia, Costa Rica, Eritrea, Ethiopia, Iceland, Kuwait, Marshall Islands, Micronesia, Palau, Panama, Rwanda, Solomon Islands, Turkey, Uganda, and Uzbekistan. For those 17 countries we do not show any withdrawal date on the chart
Dec. 2003-2007: "Stabilizing and Rebuilding Iraq: Coalition Support and International Donor Commitments," US Government Accountability Office (GOA) website, May 9, 2007
2008-2010: "Measuring Stability and Security in Iraq," US Debartment of Defense website, June 2009; Multi-National Force-Iraq and United States Forces-Iraq websites (various pages); Rod Nordland and Timothy Williams, "Iraq Force Soon to Be a Coalition of One," www.nytimes.com, July 28, 2009; "UK Troops in Iraq Moved to Kuwait," www.bbc.co.uk, July 28, 2009; "Facts, Figures Related to the Iraq War," hosted.ap.org, Aug. 31, 2010
** As of Jan. 1, 2010, the Multi-National Force-Iraq became the United States Forces-Iraq.