Impending U.S. Troop Exit Leaves Iraq Facing Uncertain Future as Militias Refuse to Disarm

Iraq is approaching a critical crossroads as the end of the month brings two momentous deadlines: the conclusion of a decades-long American military presence and an official mandate requiring non-state armed groups to surrender their arsenals.

The withdrawal of American forces is actively progressing, with military officials confirming that the hundreds of service members stationed in northern Iraq will depart prior to the September 30 cut-off. This final phase marks the twilight of an extensive foreign military campaign that has shaped the nation's contemporary history.

In an effort to assert state authority, the Iraqi government attempted to tie the departure of foreign troops to a strict ultimatum directing domestic militias to disarm. However, the majority of these powerful paramilitary factions have strongly indicated that they have no intention of relinquishing their weapons.

This persistent resistance leaves profound uncertainties regarding Iraq’s stability and governance in the post-withdrawal era. The refusal to disarm poses a direct challenge to the central government's control over national security and sovereignty.

Regional volatility has further complicated the situation. Since the United States and Israel launched attacks against Iran on February 28, Iranian-backed Iraqi armed groups have retaliated by striking American-linked targets both within Iraqi territory and across borders.

These Iraqi militias have also broadened their operational reach by coordinating with Yemen’s Houthi rebels to execute attacks against targets in Saudi Arabia. With the broader conflict between Washington and Tehran showing no signs of abating, Iranian authorities appear determined to retain their strategic leverage inside neighboring Iraq.

American defense planners remain deeply concerned about the militias' ongoing capacity to launch cross-border attacks. Nevertheless, officials have made it clear that these persistent security threats will not alter or delay the established timeline for the troop exit.

The modern history of American military engagement in Iraq began with the 2003 invasion that ousted Saddam Hussein from power. Although U.S. forces carried out a complete withdrawal in 2011, Iraqi authorities invited a smaller, U.S.-led military coalition back into the country just three years later to confront the Islamic State group, which had rapidly captured vast expanses of Iraqi territory.

Over years of heavy fighting, the extremist group was systematically dismantled and reduced to isolated sleeper cells, an outcome achieved through the combined efforts of the international coalition and Iranian-backed Iraqi militias. With the primary counterterrorism objective largely achieved, Washington and Baghdad finalized an agreement in 2024 to formally conclude the joint mission.

In accordance with that pact, American military personnel vacated major installations across central and western Iraq last year. A smaller footprint was maintained exclusively in the semiautonomous northern Kurdish region, though bases in that area have since endured frequent strikes amid the escalation of hostilities between the U.S. and Iran.

A U.S. military official, speaking on the condition of anonymity because they were not authorized to discuss the matter publicly, confirmed that the withdrawal will be entirely completed by September 30. The remaining troops deployed in the north will largely be reassigned to Jordan and other partner nations across the region.

The exit process also encompasses the removal of critical U.S. military assets, including advanced air defense systems stationed in the country. While discussions regarding a standard bilateral security cooperation framework between Washington and Baghdad may take place in the future, the precise nature and scope of any upcoming partnership remain undefined.

The defense official noted that the counterterrorism hub located in Irbil has lost much of its original operational significance as the territorial threat posed by the Islamic State has diminished. Although the base in northern Iraq was not utilized as an offensive staging ground during the confrontation with Iran, American personnel stationed there were routinely targeted by Tehran and allied Iraqi militias, making the withdrawal a necessary step to mitigate risk to U.S. lives.

Despite the tactical benefits of removing troops from harm's way, American military strategists remain troubled by the militias' proven ability to strike regional targets in Jordan, Saudi Arabia, and Israel. Defense officials are equally wary of the presence and integration of Houthi rebel operatives operating on Iraqi soil.

To deter such activities, Washington has previously conducted retaliatory airstrikes against militia installations within Iraq and imposed financial sanctions on several prominent organizations, with officials indicating that further punitive economic measures could follow.

Domestically, Iraqi political leaders have sent conflicting signals regarding the militia mandate, leaving it ambiguous whether September 30 represents an absolute deadline for total disarmament or merely a starting point for protracted political negotiations.

Independent experts view the prospects of immediate disarmament with profound skepticism. Addressing a recent panel hosted by the Atlantic Center think tank, Iraqi analyst Sajad Jiyad emphasized that no armed factions are expected to surrender their weapons by the deadline, highlighting the severe limits of state authority as foreign troops prepare their final exit.