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U.S. Completes Troop Withdrawal From Iraq, Ending Anti-ISIS Mission

Iraq

Andrew Caballero-Reynolds/Reuters

Andrew Caballero-Reynolds/Reuters

What Happened

The U.S. military completed withdrawal of its remaining forces from Iraq, departing Erbil air base on Sept. 30 and formally ending Operation Inherent Resolve. Pentagon officials said Washington will transition to a bilateral security relationship and continue providing targeted training and intelligence support to Iraqi partners.

Key Implications

Iraqi security officials told Reuters the pullout could give Islamic State sleeper cells room to regroup, and Kurdish commander Sirwan Barzani said the loss of U.S. intelligence, logistics and drones may help the militants move again. Baghdad-based analyst Ahmed Younis said Iran-backed groups may try to expand their role in state policy and institutions.

What Happened

The U.S. military completed withdrawal of its remaining forces from Iraq, departing Erbil air base on Sept. 30 and formally ending Operation Inherent Resolve. Pentagon officials said Washington will transition to a bilateral security relationship and continue providing targeted training and intelligence support to Iraqi partners.

Key Implications

Iraqi security officials told Reuters the pullout could give Islamic State sleeper cells room to regroup, and Kurdish commander Sirwan Barzani said the loss of U.S. intelligence, logistics and drones may help the militants move again. Baghdad-based analyst Ahmed Younis said Iran-backed groups may try to expand their role in state policy and institutions.

Where Sources Agree

  • arrows_inputWithdrawal Mission Completion: Various reports document the conclusion of the U.S. anti-ISIS mission in Iraq on September 30; final troops completed an orderly departure from Erbil Air Base, according to Pentagon announcements.
  • arrows_inputTrump Frames Iraq Withdrawal: Multiple sources report that President Trump framed the U.S. military withdrawal from Iraq as a decisive victory over ISIS, while contrasting the orderly nature of the departure with the 2021 Afghanistan exit, according to official statements.
  • arrows_inputPost-Withdrawal Security Concerns: Multiple accounts detail concerns that the U.S. withdrawal could create security gaps, potentially emboldening ISIS sleeper cells and Iran-backed militias, even as Iraqi forces assume primary responsibility for national security, according to security officials.

Where Sources Disagree

  • arrows_outputIraqi Security Readiness Assessment: Iraqi officials and U.S. military leaders maintain that Iraqi security forces are fully prepared to lead counterterrorism efforts independently. However, regional security analysts and Kurdish officials warn that the withdrawal creates a dangerous security vacuum, risking an Islamic State resurgence and increased dominance by Iran-aligned militias.
  • arrows_outputMilitia Disarmament Compliance: Iraqi Prime Minister Ali al-Zaidi maintains that the government will ensure non-state armed groups surrender their weapons, yet reports indicate that powerful Iran-aligned factions have rejected these disarmament demands or imposed conditions that remain unresolved.

Timeline

September 30, 2026

Immediate Aftermath And Concerns: The withdrawal prompted mixed reactions: Baghdad hailed a new phase of sovereignty while Kurdish officials warned the removal of U.S. air defenses left the Kurdistan Region vulnerable and militia disarmament deadlines were pushed (with a new target of June 2027). Iran-aligned groups celebrated the exit, raising concerns about potential influence gains by Tehran and risks to regional security.

September 30, 2026

U.S. Completes Withdrawal: U.S. military forces completed their withdrawal from Iraq, with CENTCOM announcing an orderly departure from Erbil Air Base and Iraqi officials saying all combat and logistical personnel had left by the September 30, 2026 deadline, ending a roughly 12-year Operation Inherent Resolve presence. The U.S. had previously maintained about 2,500 troops in recent years and shifted residual mission headquarters to Jordan.

July 2026

Withdrawal Reaffirmed In July 2026: Iraqi Prime Minister Ali al-Zaidi and U.S. President Donald Trump reaffirmed the timetable for U.S. forces to leave Iraq during a meeting in July 2026, reiterating the bilateral commitment to complete the transition by the agreed deadline.

Perspectives and Debates

Was the US withdrawal from Iraq a strategic mistake?

Summary by Ground AI

A varied selection of sources chosen by Ground to reflect the diversity of this story’s coverage.

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