Key event

The United States completes its withdrawal

February – April 2026

What happened

Following January strikes against ISIS after a deadly ambush, and with the integration agreement in place, US forces draw down from February and hand over their last major base to the Syrian government on 16 April 2026 — ending more than a decade of military presence that began with the anti-ISIS campaign in 2015.

The withdrawal removed the northeast's external guarantor and completed the transition's sovereignty in one stroke — leaving counter-ISIS performance, and the integration agreement's durability, to Syrian institutions under US certification watch.

Confidence: High

WhenFebruary – April 2026
KindMilitary · Diplomatic
ArenaNortheast Syria / Kurdish autonomy

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Watch questions this event bears on

Standing analytical questions whose evidence runs through this event, each with its latest review. Derived from the Watch object, never restated here.

  • MilitaryDoes ISIS stay suppressed?Unchanged
    1. 2026-08-23: No material change
    2. 2026-08-30: No material change
    3. 2026-09-06: No material change
    4. 2026-09-13: No material change
    5. 2026-09-20: No material change
    6. 2026-09-27: No material change
    7. 2026-10-04: Assessment changed
    8. 2026-10-11: No material change

Connected records

4 records that this event names, or that name it — every one an explicit reference in a published record, nothing inferred from subject matter.

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Analytical Notes1

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Where this fits

This is one entry in the Syria timeline. The full Key Events surface carries every dated turning point with its filters and its essential subset, and this event in place shows what came before and after it. How Vigil grades, dates and sources its claims is set out in the methodology.