April Sleeper Cell Report: Bloodiest Month Yet Due To ISIS Ramadan Campaign

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The 7 victims of ISIS' attack on the head of the Deir ez-Zor Civil Council Public Relations Office near Abu Khashab on April 27th 54 sleeper cell attacks across NES (32 claimed by ISIS), a 184% increase on MarchViolent 'Two Sheikhs Campaign'…

March Sleeper Cell Report: Major Attack in al-Hol; Deteriorating Security as Widespread Protests Plague Deir ez-Zor

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ISIS sleeper cell in Syria pledges allegiance to new leader 'Abu Hassan al-Hashimi al-Qurayshi'. Throughout March, sleeper cells throughout Africa, the Middle East, and Asia have filmed similar videos and distributed them online. 19 sleeper…

Sleeper Cell Report: Idlib Raid Has Little Effect On ISIS Operations, High Number of Arrests As Heseke Fallout Continues

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Qamishlo residents mourn relatives on February 2nd Key Points Major coup in joint US-SDF raid on Idlib which killed ISIS leader17 sleeper cell attacks across NES (excluding in al-Hol camp), of which 8 were claimed by ISISMain target were…

Sleeper Cell Report: Sina’a Prison Attack Shocks Heseke While Sleeper Cell Attacks Continued Throughout NES in January

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Key Points – 38 attacks documented, 34 claimed by ISIS, including the 9 day-long Battle of Heseke – The attacks resulted in 128 civilian and SDF deaths, primarily military personnel during the Heseke Battle – 4 murders…

Annual Sleeper Cell Report 2021 – Sleeper Cell Attacks Decreased but Security Forces Remained Weary

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Download here. The attack on Sina’a prison in Heseke at the end of January 2022 proved an explosive bookend to 2021, a year that had seen a decline in sleeper cell attacks in Northeast Syria (NES). Though ISIS activity in general stayed…

Sleeper Cell: Attacks on the Rise Again in November

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Weapons cache recovered from an ISIS cell planning to attack al-Sina'a prison Key Points – 22 attacks documented, 14 claimed by ISIS – The attacks resulted in 23 deaths (14 civilians, at least 9 SDF/Asayish) – 5 murders…

Sleeper Cell Report: Attacks concentrate exclusively in Deir ez-Zor in October

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Opening ceremony for the Women's Asayish General Center in Deir ez-Zor on October 11, 2021 Key Points – 13 sleeper cell attacks documented, 9 confirmed ISIS attacks – The attacks resulted in 8 deaths, including assassinations of…

Sleeper Cell Report: ISIS begins to claim more attacks amidst steady drumbeat of raids and arrests

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SDF and HAT troops in Deir ez-Zor Key Points – 13 sleeper cell attacks documented, 6 claimed by ISIS – The attacks resulted in 11 deaths, including assassinations of SDF, Asayish and AANES members – 4 people died in Al-Hol…

Sleeper Cell Report: Number of attacks stays steady as SDF raids increase in August

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SDF Counter-Terrorism Units on their way to conduct a security operation with support from the international coalition in Deir ez-Zor’s northern countryside. Key Points – 12 sleeper cell attacks documented, the same as July –…

Sleeper-Cell Report: Record Low of Attacks in July

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The secret ISIS cell lair was targeted with missiles from Coalition aircraft during an SDF raid in the countryside of Heseke Key Points - [UPDATE 9/17/21] 14 sleeper cell attacks were documented, marking a record low since RIC reporting…