The Iran-backed militias in Iraq debate is entering its most consequential phase. With the remaining U.S. troops scheduled to leave Iraq by September 30, Baghdad will lose the argument that foreign forces must depart before powerful armed factions can be brought under undisputed state control.
That does not mean Iran has “won” or that Iraq automatically becomes more sovereign when American troops leave. The broader six-month war stalemate has shown how regional influence can survive conventional battlefield setbacks. Iraq’s harder question is domestic: after the withdrawal, can its elected institutions decide who carries weapons and who controls decisions about war and peace?
Iran-Backed Militias in Iraq Face a Different Deadline
The remaining U.S. forces are expected to leave by September 30, while Prime Minister Ali al-Zaidi’s government has pledged to bring non-state weapons under state authority. The current withdrawal timetable has turned the final weeks of the U.S. presence into a test of whether Baghdad can convert a political promise into an enforceable security policy.
Several powerful Iran-aligned factions, including Kataib Hezbollah and Harakat al-Nujaba, have signaled that they are not prepared to disarm under current conditions. Other armed groups have previously shown greater willingness to hand weapons to the state.
Iraq instead faces a fragmented armed landscape: some groups participate in politics, some operate within or alongside the Popular Mobilization Forces, and some retain strategic relationships with Iran.
Withdrawal does not equal disarmament.
The Constitutional Question Is Bigger Than the Geopolitical Scoreboard
The central legal issue is straightforward even if implementation is not.
Article 9 of Iraq’s constitution places the armed forces under civilian authority and prohibits military militias outside the framework of the armed forces. The constitutional rule on militias gives Baghdad a clear principle: coercive power should ultimately answer to the state.
The Popular Mobilization Forces were incorporated into Iraq’s security architecture after playing a major role against Islamic State. Yet some factions associated with that system have preserved distinct leadership networks, political organizations and external relationships.
That produces a sovereignty problem that cannot be solved simply by calling an organization state affiliated. The real test is command.
Who can order the guns matters more than whose payroll formally covers the fighters.
If a faction can independently decide when to launch drones, threaten another country or enter a regional conflict, the state’s monopoly on force remains incomplete even when that faction has a legal or administrative relationship with Baghdad.
U.S. Withdrawal and Militia Disarmament Are Different Processes
The two September deadlines can look similar on a calendar while requiring very different kinds of power.
| Issue | U.S. Troop Withdrawal | Militia Disarmament |
|---|---|---|
| Main actors | Washington and Baghdad | Baghdad and Iraqi armed factions |
| September deadline | September 30 | Government target tied to state control |
| Core mechanism | Bilateral agreement | Domestic law, negotiation and enforcement |
| Immediate objective | End U.S. military presence | Place weapons under state authority |
| Main unresolved risk | Security gap after departure | Factions retain independent command |
The withdrawal is primarily an agreement between governments. Disarmament requires Baghdad to confront organizations embedded in Iraqi politics and security structures.
A foreign military can leave by moving personnel and equipment. An entrenched armed organization cannot be dissolved by deadline alone when it has commanders, weapons, political leverage and constituencies.
State control requires enforcement, not only an announcement.
Iran’s Influence May Become Less Visible, Not Necessarily Weaker
Iran has spent decades building relationships with armed and political actors across Iraq. Those relationships give Tehran influence without requiring a conventional Iranian military presence.
If Iran-aligned factions retain independent weapons and decision-making authority after U.S. troops leave, Tehran could preserve strategic leverage while losing one of the principal justifications those factions have used for remaining armed.
Iraqi institutions may gain more room to demand compliance once the last U.S. forces are gone.
Militia leaders have often framed their weapons as necessary because foreign forces remain on Iraqi soil. September 30 removes an important argument. If the weapons remain afterward, the justification shifts from resisting an external military presence to defending a broader political or regional mission.
That makes the sovereignty question harder to avoid.
A Security Gap Could Strengthen the Militias’ Argument
Baghdad faces a practical problem: disarmament becomes harder if the state cannot provide credible security after the American departure.
Iraq still faces Islamic State remnants, regional missile and drone warfare, and spillover from the wider Iran conflict. Kurdish officials have also expressed concern about losing U.S. air-defense coverage as American forces depart.
Baghdad is pursuing new defense capabilities, but those systems take time to procure and integrate. Any visible security failure after September 30 could strengthen a militia argument that the state cannot protect Iraq without them.
That is why security capacity and sovereignty are linked. Baghdad must show that centralizing weapons does not leave communities or infrastructure less protected.
September 30 Will Start the Real Test
The most important developments will come after the U.S. withdrawal, not before it.
Watch whether Kataib Hezbollah, Harakat al-Nujaba and other resistant factions change their positions once foreign troops are gone. Watch whether Baghdad moves from negotiation to enforcement, and whether the Popular Mobilization Forces operate under a genuinely unified chain of command.
Cross-border operations will be another indicator. If armed Iraqi factions continue launching attacks or coordinating regional military activity without explicit government authorization, the sovereignty problem will remain visible regardless of formal organizational charts.
The Iran-backed militias in Iraq issue therefore cannot be reduced to whether Washington leaves or Tehran gains influence. The U.S. departure removes one foreign military presence. It does not automatically give Baghdad a monopoly on force.
Iraq’s sovereignty will be measured by what happens next: whether its government can decide when the country goes to war, whether armed factions accept civilian command, and whether political influence can exist without an independent military veto.
September 30 may close the chapter on the remaining U.S. troop presence. It could also open the harder chapter of deciding who controls Iraq’s guns when there is no longer a foreign deployment to blame.
