Key event

The territorial caliphate ends at Baghouz

March 2019 Deir ez-Zor province

What happened

The SDF takes the last ISIS-held village on the Euphrates; the territorial caliphate ends, leaving an insurgency in the desert, and tens of thousands of fighters and family members in SDF-run prisons and the al-Hol and Roj camps.

Territorial defeat converted ISIS into the remnant threat the module tracks — and created the detention-and-camps file that has been a security and humanitarian burden on the northeast, and now the state, ever since.

Confidence: High

WhenMarch 2019
WhereDeir ez-Zor province
KindMilitary · Territorial change
ArenaISIS remnants and the central desert

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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

3 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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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.