U.S. Ends Iraq Coalition Mission as Iran-Backed Factions Refuse to Disarm

BAGHDAD, The United States and its partners formally ended Operation Inherent Resolve in Iraq on Wednesday, closing out nearly 12 years of coalition military presence in the country and opening a new chapter whose stability is already in question.

The Pentagon confirmed the conclusion in a statement released from Washington. <cite index="20-8">"Today, the United States and our Coalition partners formally concluded Operation Inherent Resolve in Iraq, consistent with the September 2024 US-Iraq joint statement and US national interests," the Pentagon said.</cite> The department added, however, that it would not be a clean break: <cite index="20-9">the US would "continue to provide targeted training and intelligence support to our Iraqi partners."</cite>

<cite index="19-5">Coalition troops had deployed to Iraq and Syria in 2014 to fight the Islamic State group, which had seized large swathes of territory, committing massacres and forcing thousands of women and children into slavery.</cite> <cite index="20-5">The group was defeated in Iraq in 2017 and in Syria in 2019, but coalition forces stayed on to battle the group's remnants.</cite> <cite index="20-6">The US and Iraq agreed in 2024 to wind down the coalition's mission, and its troops withdrew gradually from bases across the country, restricting their presence to the autonomous northern Kurdistan region.</cite>

The Iraqi government greeted the moment as a political vindication. <cite index="19-9,19-10">"A new phase has begun, defined by Iraq's sovereignty, the strength of its institutions, the readiness of its forces, unity of decision-making, and balanced partnerships with its friends," a senior Iraqi official said at a ceremony in Baghdad. He declared that October 1 would be celebrated as Sovereignty Day.</cite>

But the celebration sits uneasily alongside the security landscape it leaves behind. <cite index="20-11">Kurdish Peshmerga fighters played an important role in crushing IS, as did powerful Iraqi factions, including pro-Iran groups that have yet to disarm.</cite> <cite index="19-8">The Iraqi government, which celebrated the withdrawal, believes it will deprive Iran-backed factions of the excuse they have used to retain their arsenal.</cite> That calculation is a gamble: those factions have shown little appetite for disbanding, and their continued existence as armed parallel structures inside the Iraqi state was a friction point long before the coalition arrived.

<cite index="23-3">The United States announced it had completed its withdrawal from Iraq more than 20 years after invading the country to topple Saddam Hussein, in a move that was celebrated by the Iraqi government and the Pentagon, as well as Iran and its allies, who claim years of pressure forced the American departure,</cite> CNN reported.

The timing is awkward for Washington. The withdrawal comes as the US is simultaneously engaged in military operations against Iran itself, a fact that gives the coalition's departure a sharper edge than a straightforward transfer of security responsibility. Tehran-aligned factions in Iraq wasted no time framing the exit as a victory won by sustained pressure rather than a scheduled handover.

<cite index="24-2">Iranian-backed groups celebrated the exit from Iraq, while Iraqis in the Kurdish region fear ISIS could see a resurgence if emboldened by the U.S. exit, according to the Associated Press.</cite>

<cite index="25-4">This development marks the conclusion of the US-led international coalition's mission in Iraq, an operation spanning nearly 12 years during which the coalition played a pivotal role in defeating ISIS.</cite> What it does not mark, by any serious reading of the region, is the end of the fight. IS retains a residual presence in the desert terrain along the Syrian border, and the question of who fills the security vacuum in areas where coalition forces once held the line will not be answered at a ceremony in Baghdad.

For Europe, the withdrawal matters beyond the Middle East calculus. Several NATO members contributed forces to Operation Inherent Resolve, and their militaries will now be watching closely to see whether the bilateral training framework the Pentagon promises can substitute for the collective deterrent the coalition provided. Italy confirmed its own troop withdrawal separately this week, according to Arab News. The answers will shape how willing those same governments are to commit forces to future coalition frameworks, a question that has grown more pointed as European capitals try to balance commitments on their eastern flank with obligations further afield.

Sources cited:
- Agence France-Presse via France24 (https://www.france24.com/en/live-news/20260930-us-led-coalition-ends-mission-in-iraq)
- Agence France-Presse via Manila Times (https://www.manilatimes.net/2026/10/01/world/americas-emea/us-led-coalition-ends-mission-in-iraq/2436267)
- Pentagon statement via Kuwait Times (https://kuwaittimes.com/article/50757/world/middle-east/us-coalition-mission-ends-in-iraq/)
- CNN (https://cnn.com/2026/09/30/middleeast/us-military-withdrawal-iraq-intl)
- The Hill (https://thehill.com/policy/defense/6119808-us-forces-depart-iraq/)
- Arab News (https://www.arabnews.com/middle-east/moroccos-king-appoints-the-countrys-first-woman-prime-minister-3003765)