West Africa / Lake Chad Basin·Nigeria (Borno State); Niger (Diffa); Cameroon (Far North); Chad (Lake Chad islands)

ISWAP

Also known as: Islamic State West Africa Province; Wilayat Gharb Ifriqiyah; IS-WA; the Lake Chad Basin IS franchise

EscalatingJihadist Organisation; Islamic State Affiliate; Armed Group; Governance ActorWest Africa / Lake Chad Basin2015 – present

The Islamic State's most active and lethal affiliate globally as of 2025–2026 — ranked first among all IS provinces in attacks (445) and casualties (1,552) per al-Naba — operating across the Lake Chad Basin and the subject of a major May 2026 US-Nigeria joint operation that killed senior leader Abu-Bilal al-Minuki.

Background

The Islamic State West Africa Province (ISWAP) is the Islamic State's most active and lethal affiliate globally as of 2025–2026, ranked first among all IS provinces in both attacks claimed and casualties inflicted according to IS's own weekly al-Naba publication data for 2025. It represents the evolved, more strategically sophisticated successor to the original Boko Haram insurgency in northeastern Nigeria, and operates across a broader Lake Chad Basin that spans portions of Nigeria, Niger, Cameroon, and Chad.

ISWAP's emergence as a distinct organisation traces to August 2016, when IS central endorsed Abu Musab al-Barnawi — son of Boko Haram founder Mohammed Yusuf — as the new leader of IS's West Africa Province, implicitly replacing Abubakar Shekau. IS's decision reflected dissatisfaction with Shekau's indiscriminate targeting of Muslim civilians. Al-Barnawi's faction adopted a fundamentally different strategy: targeting military forces and non-Muslim institutions primarily, providing governance services in communities under its control, and building the community legitimacy that converts territorial control into durable power.

The ISWAP-JAS (Boko Haram) split produced a period of intense inter-jihadist competition throughout 2017–2021. ISWAP's governance model proved more attractive to communities tired of JAS's predatory indiscriminateness; it absorbed fighters, territory, and community legitimacy. In May 2021 ISWAP invaded JAS's Sambisa Forest stronghold; Shekau detonated a suicide vest rather than be captured. ISWAP absorbed most of the JAS territory and many fighters, dramatically expanding its operational footprint.

From 2022 to early 2024 ISWAP appeared to be on the defensive under more effective MNJTF and Nigerian military operations and Borno State's counter-insurgency strategy. Then in early 2025 it launched its most ambitious offensive in years — the 'Holocaust of the Camps' — conducting at least twelve coordinated attacks on military bases across Borno State and exploiting the systemic flaws of Nigeria's 'supercamp' strategy. From January to June 2025 ISWAP claimed 232 attacks; al-Naba ranked ISWAP first globally in both attacks (445) and casualties (1,552) for the full year 2025. The US-Nigeria joint operation launched on 16 May 2026 killed Abu-Bilal al-Minuki, ISWAP's General Directorate of States — the most significant blow to its leadership since 2021–2022; by 19 May, Nigerian authorities reported 175 ISWAP and Boko Haram militants killed across the joint operations.

Main Actors

ISWAP leadership (post al-Minuki): Abu-Bilal al-Minuki was killed 16 May 2026. The current ISWAP leadership structure is not fully public as of mid-2026. ISWAP has demonstrated significant leadership resilience; killing of multiple senior figures has not prevented strategic continuity.
Nigeria (Army and Air Force): Primary state adversary in Borno State and across northeastern Nigeria. The military's CJTF-supported 'supercamp' strategy has been criticised for concentrating troops in ways that make them vulnerable to ISWAP's large-unit assaults while ceding surrounding rural territory.
United States (CT partnership): Long-standing CT cooperation with Nigeria including intelligence sharing, training, and limited operational support. December 2025 US airstrikes in Sokoto State; May 2026 joint operation killing al-Minuki. Marks a significant deepening of direct military involvement.
Multinational Joint Task Force (MNJTF): Nigeria, Cameroon, Chad, Niger, Benin five-nation force covering the Lake Chad Basin. Severely degraded by Niger's March 2025 withdrawal, strained Nigeria-Cameroon and Nigeria-Niger relations, and resource constraints.
Civilian Joint Task Force (CJTF): Community-based self-defence force in Borno State established in 2013. Provides intelligence and support for Nigerian military operations; also accused of human rights abuses including extrajudicial killings.
Islamic State Central (IS): Provides ISWAP with ideological direction, strategic guidance, and reportedly training (at least six IS trainers from the Middle East documented by ISS defector accounts). Ranking ISWAP as the top global province suggests continued investment in the franchise.

Drivers

Governance provision in under-governed Lake Chad communities
Lake Chad geography providing natural sanctuary
MNJTF degradation following Niger's 2025 withdrawal
IS Central support and tactical evolution (IS-trained advisers, IED and drone usage)
Persistent social grievances and economic marginalisation in northeastern Nigeria

Timeline

2015
Boko Haram (Shekau) pledges allegiance to Islamic State; IS designates West Africa Province.
August 2016
IS central endorses al-Barnawi as new ISWAP leader, displacing Shekau; ISWAP-JAS split formalised.
2017–2020
ISWAP builds governance structures in Lake Chad Basin; conducts major military base assaults; expands into Cameroon Far North and Niger Diffa.
April 2019
IS formally recognises ISWAP as its West Africa Province in al-Naba.
May 2021
ISWAP invades Sambisa Forest; Shekau killed. ISWAP absorbs much of JAS territory. Al-Barnawi killed shortly after; Ibrahim Lawan assumes leadership.
2021–2024
MNJTF and Nigerian military increase pressure; Borno amnesty and resettlement programmes show results; ISWAP shifts to smaller units.
January–March 2025
'Holocaust of the Camps' offensive: 12+ coordinated attacks on military bases in Borno; Malam Fatori base overrun 24 January; 232 attacks claimed January–June 2025.
April 2025
Governor Zulum states authorities are 'losing ground'; ISWAP attempts to isolate Damboa by bombing bridges on the Biu–Damboa road.
May 2025
ISWAP ranked #1 IS province globally in attacks (445) and casualties (1,552) for 2025 per al-Naba.
March 2025
Niger withdraws from MNJTF; cross-border CT coordination degrades; ISWAP exploits Niger-Nigeria border gaps.
December 2025
US airstrikes against IS-linked targets in northwestern Sokoto State.
16 May 2026
US-Nigeria joint operation kills Abu-Bilal al-Minuki and other senior commanders; 175 militants killed by 19 May.
30 May 2026
US-Nigeria joint airstrikes kill 21 ISWAP fighters in Borno State; operations continuing.

Humanitarian Impact

ISWAP's insurgency, combined with the parallel JAS threat and Nigerian military operations, has produced one of the most severe humanitarian crises in West Africa. Approximately 2.9 million people are internally displaced in the Lake Chad Basin (OCHA, June 2025), with 2.3 million in Nigeria. Over 1,827 schools have been closed. Since 2014, over 2,000 children have been abducted or kidnapped. Hundreds of thousands of civilians live under ISWAP's de facto governance — subject to taxation, behavioural codes, and gender restrictions but also recipients of some governance services. Nigeria's counterterrorism response has itself produced significant humanitarian harm. The Lake Chad Basin humanitarian response received only 19% of required funding in 2025 (OCHA).

Peace Efforts

Borno State amnesty and resettlement (2021–present): combination of military pressure, large-scale amnesty (~10,000 former fighters reintegrated), and civilian resettlement programmes — the most effective domestic counterterrorism strategy in the region. The 2025 ISWAP offensive reversed some of its gains.
MNJTF (2014–present): five-nation multinational force; significantly degraded by Niger's withdrawal, strained bilateral relations, and under-resourcing.
US-Nigeria Joint Operations (December 2025–present): US airstrikes in Sokoto (December 2025) and the May 2026 joint operation killing al-Minuki represent a significant re-engagement of US direct military CT support to Nigeria.

Current Situation

As of mid-2026, ISWAP is simultaneously experiencing its most significant military pressure in years (the May 2026 US-Nigeria joint operation) and operating at its highest attack pace since 2021. The killing of al-Minuki is a genuine blow to ISWAP's senior leadership but the group has repeatedly demonstrated leadership resilience. The broader structural conditions — Lake Chad geography, MNJTF degradation, Nigerian military over-stretch, and underlying economic marginalisation — remain intact. The US re-engagement, while welcome to Nigeria, carries the risk of over-reliance on a military approach that has not produced lasting results in the past.

Outlook

Short-term (0–12 months): High. ISWAP will continue its offensive in Borno State; the killing of al-Minuki will likely produce a short-term reactive hardening of operations. The Nigeria-US partnership needs to be sustained with sufficient intelligence resources, training support, and amphibious/naval investment for the Lake Chad Basin.

Long-term (3+ years): Long-term reduction of ISWAP requires both sustained military pressure and governance investment: economic development in northeastern Nigeria, effective civilian resettlement, credible amnesty programmes, and genuine accountability for military abuses. Without the governance dimension, military operations will continue to degrade ISWAP without defeating it. The MNJTF needs reconstruction — which requires normalisation of Niger-Nigeria relations as a minimum.

Explore CRCA

Related CRCA Resources

APCO 2026 — West Africa and Sahel Sub-Regional Conflict Trends Analysis
ACRI 2026 — Country Risk Score: Nigeria

Citation

CRCA–ACAN Editorial Team (2026). ISWAP: Islamic State West Africa Province and the Lake Chad Basin Conflict. In CRCA African Conflict Encyclopedia, Volume I. Conflict Research, Consulting & Advocacy (CRCA) / African Conflict Analyst Network (ACAN). https://crcahub.org/encyclopedia/iswap

Editorial Metadata

Version: 1.0 (Pilot)
Editor: CRCA–ACAN Editorial Team
Status: Pilot entry — full peer review pending
Sources updated: 24 June 2026
Next review: December 2026

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