context: The Iraq war is a long-term armed conflict that began with the 2003 invasion of Iraq by the US-led coalition forces. The invasion toppled Saddam Hussein's government. However, the conflict has continued in much of the next decade as a rebellion and has appeared in opposition to the occupation forces and the post-invasion Iraqi government. [1] An estimated 151,000 to 600,000 Iraqis or more were killed in the first 3-4 years of the conflict. The United States officially announced its withdrawal from the country in 2011, but returned and participated in 2014 at the head of a new coalition; The insurgency and civil armed conflict continued.
question: Who started the Iraq war?
answers.text: US-led coalition forces