The Department of War formally announced the conclusion of the U.S. military mission in Iraq on Oct. 1, ending Operation Inherent Resolve and closing a chapter of American combat presence that began more than two decades ago.
Chief Pentagon Spokesman Sean Parnell confirmed that U.S. Central Command marked Sept. 30 as the operational end date for the mission, which was launched in 2014 to combat the Islamic State group’s territorial expansion across Iraq and Syria.
“The conclusion of the U.S. military mission in Iraq reflects the progress made by Iraqi security forces and the enduring partnership between our two nations,” Parnell said in a statement released by the Department of War.
The drawdown carries sweeping implications for U.S. force posture in the Middle East, where tens of thousands of American troops have been stationed since the 2003 invasion of Iraq. At its peak, the U.S. had more than 170,000 service members deployed in Iraq.
The announcement coincided with a series of coordinated government actions on Oct. 1, including Treasury Secretary Scott Bessent’s meeting with Iraqi Foreign Affairs Minister Fuad Hussein and the launch of Operation Economic Outcast — a multiagency sanctions campaign targeting Iran’s economic lifelines. The Department of War also released readouts from military consultations with Qatar and Bahrain, both of which host major U.S. installations in the region.
The timing suggests the administration is pivoting from a military-led approach to the U.S.-Iraq relationship toward one centered on economic diplomacy and financial engagement, while maintaining its regional security architecture through Gulf state partnerships.
CENTCOM has not publicly disclosed how many U.S. troops remained in Iraq at the time of the mission’s conclusion or what advisory or support arrangements, if any, will continue.
The end of Operation Inherent Resolve follows years of negotiations between Washington and Baghdad over the terms and timeline for winding down the U.S. combat presence. Iraqi political leaders had faced domestic pressure to reduce the American military footprint, while U.S. officials sought assurances that Iraqi forces could maintain security gains against ISIS remnants.
Congressional leaders on both sides of the aisle are expected to weigh in on the decision. The House Armed Services Committee and Senate Foreign Relations Committee have oversight jurisdiction over the withdrawal and any follow-on security arrangements.
For military families across the United States, the formal conclusion means the end of a deployment cycle that has sent hundreds of thousands of service members to Iraq since 2003. Thousands of Americans were killed and tens of thousands wounded during the broader Iraq conflict.