1OCT

US flies its last troops out of Erbil

3 min read

19:22UTC

US Central Command flew its last troops out of Erbil Air Base on 30 September, closing the Iraq leg of a counter-Islamic State mission that has run since 2014. The written American answer to Tehran had reached Iran's foreign minister in Doha the day before.

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ConflictDeveloping

Key takeaway

America gave up its only land basing next to Iran while holding its carrier force at two.

US Central Command (CENTCOM), the command that runs American forces across the Middle East, flew its last troops out of Erbil Air Base in northern Iraq on Wednesday 30 September 2026⁠¹⁠². The departure closed the Iraq leg of Operation Inherent Resolve, the counter-Islamic State mission, where most of the 1,500 American and coalition personnel on that mission in Iraq were based⁠³⁠⁴.

The task force itself did not close. The Combined Joint Task Force (CJTF-OIR), the standing command that has run the campaign against Islamic State since 2014, has moved its headquarters to Jordan and continues working in Syria⁠⁵. What ended on 30 September was the Iraq leg, not the campaign. The drawdown ran on a timetable Washington and Baghdad agreed in September 2024, through the handover of Ain al-Asad Airbase to the Iraqi army in January 2026. Admiral Brad Cooper, who commands CENTCOM, told the departing force that "because of your grit, sacrifice and professionalism, ISIS no longer poses a systemic threat to Iraq's national security"⁠⁶.

At sea the commitment held; it did not grow. The aircraft carrier USS Theodore Roosevelt sailed on Sunday 27 September to relieve USS George Washington⁠⁷. It is the fifth American carrier sent to this war, and the relief keeps the force at two strike groups rather than building to three⁠⁸. Leaving the land, staying at sea.

Neither move was decided in the nine days it landed in. Erbil took two years to schedule and a carrier relief is a rotation, so a reader looking for intent should weigh the departure above any speech. The basing that made an Iraq-launched American strike available has gone, and nothing available in weeks replaces it. Tehran's own pressure track is still unspent: a bill for Iran to leave the Nuclear Non-Proliferation Treaty, filed under the fastest procedure Iran's parliament has, sits unscheduled on the Speaker's desk at the Majlis.

Deep Analysis

In plain English

Since 2014 the United States has kept troops in Iraq to fight Islamic State, and most of them worked out of an air base at Erbil, in the Kurdish north. On 30 September 2026 the last of them flew out and Iraqi forces took over. The task force that ran the mission has not closed down; it has moved its headquarters to Jordan and carries on working in Syria. This matters because Iraq shares a long border with Iran, and the United States is at war with Iran. American aircraft flying from Iraqi soil could reach Iranian targets quickly. Now that option has gone. What remains in the region is at sea or on bases owned by Gulf governments, and those governments can say no to a mission they do not want launched from their territory. The same week, the aircraft carrier USS Theodore Roosevelt sailed to swap places with USS George Washington. That keeps two carriers in the region, the same number as before, rather than adding a third.

Deep Analysis

Root Causes

The mission's legal footing in Iraq was counter-Islamic State, agreed with Baghdad and dated to 2014, and it carried no authority covering hostilities with Iran. Once Iraqi governments had set a withdrawal calendar in September 2024, keeping Erbil open for a different war would have required a new agreement that no Iraqi cabinet has offered.

Erbil was the task force's main operational hub and held most of the 1,500 American and coalition personnel on the mission. Closing it moves every land-launched American sortie in the theatre onto an airfield owned by a Gulf government with its own working relationship with Tehran, which converts a basing question into a question of who may refuse a mission.

Escalation

Sideways, and the carrier rotation is the reason. Relieving USS George Washington with USS Theodore Roosevelt holds the force at two strike groups rather than building to three, which is a commitment to continue rather than to widen.

The signal to watch is a third carrier being ordered to the Central Command area, or a Gulf government publicly refusing an American sortie from its soil, which is the first point at which the loss of Iraqi basing becomes a real constraint rather than a notional one.

What could happen next?

Consequence
With Erbil closed, any American land-launched strike on Iran needs permission from a Gulf host government, so a third country gains a veto it did not previously hold.
Immediate · Assessed
Meaning
Washington reduced its forward land options in the week its envoys were exchanging written terms with Tehran through Doha, which runs against the public language of escalation.
Short term · Assessed
Precedent
A departure scheduled over two years with Baghdad cannot be reversed in a week, which makes it a harder read on American intent than any speech.
Medium term · Assessed
Risk
Islamic State retains a presence in Syria, where the task force continues to operate from Jordan, so a resurgence in Iraq would have to be answered without the Erbil hub.
Long term · Suggested

Source Landscape

This story draws on neutral-leaning sources from United States

United States

Primary parallel: American forces left Iraq entirely in December 2011 on a negotiated calendar rather than a battlefield decision, then returned in 2014 after Islamic State took Mosul, with air strikes beginning on 8 August that year. A scheduled exit from this same ground has already been reversed once.

Counter-parallel: The handover of Ain al-Asad Airbase to the Iraqi army in January 2026 ran on the same bilateral timetable and drew no return, so a phased departure under this agreement has also held.

Consensus view: US Central Command's own release ties the Erbil departure to a bilateral agreement reached with Baghdad in September 2024 and executed in phases from October 2025, with Ain al-Asad Airbase handed to the Iraqi army in January 2026. Admiral Brad Cooper presented it as a counter-Islamic State mission finished, and the task force itself continues the Syria mission from Jordan.

Counter-view: Ali Mohammadi, deputy for political affairs of the Islamic Revolutionary Guard Corps Navy, told reporters in Bandar Abbas on 27 September 2026 that Iran would strike American vessels as far as the Indian Ocean if a new war began. On that account an American force held afloat presents a wider target set than a defended airfield, not a safer one.

Key tension: Whether two carrier strike groups and Gulf host basing leave Washington more usable options than a fixed airfield inside the country bordering Iran, or fewer.

First Reported In

Update #180 · Washington left Iraq as it answered Tehran

US Central Command· 1 Oct 2026

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Different Perspectives

Russia

Russia vetoed the same renewal on 17 September, arguing that Britain, France and Germany never validly triggered the snapback that reimposed the pre-2015 UN resolutions. No panel was ever seated under that mandate, so the UN list decays fastest for states that screen against it rather than against the American one.

China

China vetoed renewal of the UN sanctions monitoring mandate on 17 September, arguing that Resolution 2231 terminated on 18 October 2025 and that the Security Council should drop Iran's nuclear file altogether. On that reading there is nothing to monitor, so the sanctions survive and their enforcement does not.

Iraq

Baghdad saw the last American counter-Islamic State troops leave its territory on 30 September, completing a timetable it agreed with Washington in September 2024. Iraqi airspace deconfliction passes to Baghdad, which still has an open inquiry into the Maysan drone launches that has named nobody.

Pakistan

Treasury names Waseem Pasha Tajammal of Rawalpindi as the Cavalier group's chairman and places one of the designated incorporations in Islamabad. QatarEnergy separately told Pakistan that liquefied natural gas cargo cancellations would run through November, so Islamabad carries an enforcement question and a supply gap at once.

Turkey

Treasury named a Cavalier Dynamics company incorporated in Istanbul among the ten nodes it designated on 29 September, and Ankara has published no response. Turkey imported a record 120,000 barrels a day of Indian diesel in August, cutting Russia's share of its diesel imports to 20 per cent.

India

Suraj Yadav, a wiper from Uttar Pradesh, was killed aboard the Cape Dao on 23 September, and 19 of the ship's 20 Indian crew were taken off alive. India's September imports ran at 575,000 barrels a day from Iraq and 566,000 from Saudi Arabia, back to pre-conflict rates.