Africa — 2026-05-09

JNIM Expansion Into Coastal West Africa Accelerates as Benin Records Deadliest Year on Record

Africa Defense Forum reported that JNIM killed 15 soldiers and wounded five in an attack on a military outpost in Kofouno, Benin's northeastern Alibori department, in early March 2026, following a 2025 assault at Wara and Bessassi that killed dozens. ACLED data cited by Stimson Center and Africa Defense Forum show attacks in northern Benin grew from 22 in 2021 to 176 in 2024; Vision of Humanity reported a 70 percent rise in Benin fatalities across 2025, with JNIM formally appointing an emir for the country as the group presses a southward corridor from the Sahel toward the Gulf of Guinea through Togo, Benin, and northern Ghana. The Stimson Center reported that JNIM claimed its first attack on Nigerian territory near the Benin border in October 2025. The Sahelian juntas' departure from ECOWAS in January 2025 has disrupted cross-border intelligence sharing on militant movements, Africa Defense Forum noted.

Analysis
JNIM's October 2025 first attack on Nigerian territory marks a transition from opportunistic cross-border raiding to deliberate corridor construction toward the Atlantic, per a single Stimson Center assessment. The Sahelian juntas' January 2025 ECOWAS departure eliminated cross-border intelligence sharing at precisely the moment the Benin-Niger-Nigeria triangle became JNIM's most active front, with the W-Arly-Pendjari complex now an ungoverned sanctuary cycling fighters into adjacent territory. A coastal mass-casualty attack within the next six months carries a roughly even chance. The incident spike may instead reflect bottom-up pressure from autonomy-seeking fighters rather than centrally directed strategy. ICG analysis finds senior leadership regards coastal expansion as secondary to Sahel consolidation and fears overextension will fragment the movement.

1 sources

Southward Creep: The Sahel Insurgency Reaches Coastal West Africa - Stimson Center