The situation
U.S. Central Command said on September 30 that coalition personnel and equipment had completed an orderly departure from Erbil Air Base, the final operational hub for Operation Inherent Resolve in Iraq. The departure formally concludes the coalition’s Iraq military mission under the phased transition agreed by Baghdad and Washington in September 2024; the United Kingdom also confirmed that its personnel had departed.
The end of the Iraq mission does not end U.S.-led counter-ISIS activity in the region. CENTCOM says the Combined Joint Task Force remains active from Jordan for operations focused on Syria, while security cooperation inside Iraq shifts to Iraqi-led and bilateral arrangements.
Why it matters
The change removes the Iraq-based coalition structure that supported the counter-ISIS campaign and places greater responsibility for domestic security on Iraqi institutions. It is a negotiated transition rather than an abrupt unilateral withdrawal, but the practical scope of future bilateral U.S.-Iraq cooperation has not been detailed publicly.
Regionally, the coalition retains a Syria-focused operational presence from Jordan, preserving a counter-ISIS mission outside Iraq while altering the geography and political basis of its regional posture.
What changed
On September 30, coalition forces and equipment completed their departure from Erbil Air Base, formally ending Operation Inherent Resolve in Iraq.
The assessment
Current judgement
The Iraq mission has ended, but the coalition’s regional counter-ISIS posture continues through its Jordan-based Syria operation.
What could challenge this assessment
Public statements confirm the mission’s conclusion but provide limited detail on the future scope of bilateral U.S.-Iraq security cooperation.
Impacts
Military & Security
The coalition’s Iraq-based counter-ISIS mission has ended, transferring domestic security responsibility to Iraqi-led arrangements while the Syria-focused task force continues from Jordan.
Diplomacy
The completed withdrawal implements the September 2024 U.S.-Iraq transition agreement and shifts the relationship from a coalition mission toward bilateral security cooperation.
Political Stability
Iraqi institutions now assume greater responsibility for the security functions previously supported by the coalition, although the effects on internal stability are not yet established.
Full edition assessment · Military & Security
Military and security conditions are volatile, driven by Russia’s large missile-and-drone attack on Ukrainian critical infrastructure and the formal end of the US-led coalition’s Iraq mission. The Ukraine attack sustains pressure on Ukrainian air defences and has prompted heightened readiness in neighbouring NATO states, while the Iraqi transition transfers more security responsibility to domestic institutions even as the Syria-focused counter-ISIS mission continues from Jordan.
The United States has also targeted alleged Iranian military-procurement channels, but its operational effect is not yet established. Conversely, the prospective US-China crisis-communication memorandum and the case-by-case Syria defence-trade licensing policy are not yet evidence of delivered security capability or functioning deconfliction arrangements.
Moderate confidence · Volatile · Volatile
Russian strikes increase air-defence and regional incident burdens
The September 29–30 Russian attack targeted Ukrainian energy and other critical infrastructure, while reported drone activity near Moldova led Poland and Romania to heighten readiness. The direct effect is continued demand on Ukraine’s air-defence system and a more demanding monitoring environment along Ukraine’s western and southern approaches.
Ukrainian air-defence capacity and civilian infrastructure are immediately exposed; the supplied evidence does not establish a direct Russian attack on NATO territory.
Signal to watchFormal confirmation by Moldovan, Polish or Romanian authorities of a border or airspace incident linked to the attack would materially change the regional risk assessment.
Iraq transition tests Iraqi-led counter-ISIS capacity
Coalition personnel and equipment have departed Erbil Air Base, completing the Iraq component of Operation Inherent Resolve under the agreed transition. Counter-ISIS operations focused on Syria continue from Jordan, but Iraq-based coalition structures no longer provide the same operational framework.
Iraqi security institutions and any subsequent bilateral arrangements with the United States are most exposed to capability or coordination gaps during the transition.
Signal to watchA public US-Iraq bilateral security arrangement defining access, advisory support or operational cooperation would clarify the post-coalition security architecture.
Full edition assessment · Diplomacy
Diplomacy is volatile rather than uniformly deteriorating. Qatar-facilitated US-Iran exchanges have advanced to formal feedback, but undisclosed terms, an apparent sequencing dispute and no announced maritime-access arrangement leave the central de-escalation track unresolved. US sanctions on alleged Iranian procurement networks are proceeding alongside those contacts.
There are limited countervailing improvements: the United States and China have committed to an AI-incident channel and further dialogue, and Washington has replaced its blanket Syria defence-trade denial with case-by-case review. Neither initiative has yet demonstrated operational implementation or resolved their wider underlying disputes.
Moderate confidence · Improving · Easing
US-Iran contacts remain constrained by parallel coercion and sequencing
Iran has confirmed receipt of a US response through Qatari mediation, but no public terms or timetable have been released. At the same time, US designations against alleged Iranian military-procurement networks maintain economic pressure, leaving diplomacy and coercive measures operating in parallel rather than producing a settlement.
Gulf maritime access and the broader conflict de-escalation track remain exposed to failure over the order, verification and implementation of reciprocal steps.
Signal to watchA jointly or separately confirmed agreement setting out initial reciprocal measures, verification and implementation timing would be the clearest evidence of movement beyond message-passing.
New US-China and Syria channels are institutional, not yet operational
Washington and Beijing have agreed to establish an AI-incident channel and seek a military crisis-communication memorandum, while the United States has opened a legal route for case-by-case Syria-related defence licensing. Each step expands engagement architecture, but the operating rules, memorandum terms and actual licence decisions remain undisclosed.
The immediate benefit is limited to creating potential channels for contact and review; no demonstrated crisis-management mechanism or authorised Syria-related defence transfer is evidenced.
Signal to watchPublished operating procedures for the US-China incident channel, a concluded military memorandum, or a specific approved Syria-related licence would establish whether these commitments are becoming functional.
Full edition assessment · Political Stability
Political-stability pressure is focused on Iraq’s security transition. The end of the coalition’s Iraq mission transfers greater responsibility for domestic security to Iraqi-led and bilateral arrangements, while the future scope of US-Iraq cooperation has not been detailed publicly.
The change was negotiated rather than abrupt, and the coalition’s Syria-focused mission continues from Jordan. Those factors limit the basis for concluding that instability will increase, but they do not remove execution risk during the handover.
Moderate confidence · Volatile · Volatile
Iraqi security ownership becomes the key transition variable
The completed departure from Erbil ends the coalition’s Iraq-based operating structure and places greater reliance on Iraqi institutions and future bilateral security cooperation. The political consequence depends on whether those arrangements preserve coordination and security capacity.
Iraqi authorities face the most immediate institutional exposure, particularly if transition arrangements prove less capable than the former coalition framework.
Signal to watchPublic detail on post-mission US-Iraq security cooperation, including advisory or support arrangements, would indicate how much continuity the transition retains.
US policy shift offers conditional engagement with Syria
Removing Syria from the ITAR policy-of-denial list signals deeper US engagement with post-Assad authorities, but it authorises only case-by-case consideration of future defence transactions. The measure may expand diplomatic options without yet changing conditions on the ground.
Syria’s authorities gain a potential channel for engagement, but no licensed transfer or direct stabilising security effect has been established.
Signal to watchA specific US licensing decision and its stated end-use conditions would show whether the policy change is becoming materially consequential.
What to watch
- What bilateral U.S.-Iraq security arrangements are formally announced or implemented after the coalition mission’s conclusion?
- Does CENTCOM report any change in the scale, access arrangements, or operational tempo of the Jordan-based Syria mission?
Evidence and uncertainty
Moderate confidence. Moderate confidence. 3 retained references from 3 reporting origins (Reuters, U.S. Central Command / DVIDS, UK Government). Claim-level independent corroboration has not been established. Confidence concerns the evidence for the reported development, not the probability of an outlook.
Useful context
Operation Inherent Resolve
The U.S.-led coalition operation established to counter the Islamic State group.
Its Iraq component formally concluded on September 30, 2026.
U.S. Central Command
The U.S. military command responsible for operations across the Middle East and parts of Central and South Asia.
It announced the completed departure from Erbil and the continuing Jordan-based Syria mission.
Erbil Air Base
A military facility in Erbil, in Iraq’s Kurdistan Region.
It was the final operational hub from which coalition personnel and equipment departed.
Geographic context
- 01Erbil, Iraq (city)
- 02Baghdad, Iraq (city)
- 03Amman, Jordan (city)