Mozambique Cabo Delgado Insurgency

The Mozambique Cabo Delgado insurgency is one of Africa's most underreported conflicts - a near-decade-long Islamist armed movement in the northernmost province of Mozambique that has killed over 6,400 people, displaced 1.3 million, and placed one of the world's largest natural gas projects on indefinite hold. Despite its significance, it receives a fraction of the international attention given to the Sahel, Somalia, or the DRC - a gap that Small Wars Journal characterised in January 2026 as 'a global security blind spot.'' The insurgency's origins lie in the specific conditions of Cabo Delgado: a predominantly Muslim province that has been systematically marginalised by a Frelimo government dominated by southern, Christian elites since independence. The province has some of the lowest development indicators in Mozambique, which itself ranks among the world's poorest countries. When the discovery of massive natural gas reserves offshore Cabo Delgado (one of the largest gas finds in Africa) generated international investment but produced no visible benefits for local communities - while simultaneously threatening displacement of fishing communities near the Afungi LNG project site - grievances were acute and exploitable. The movement that became Islamic State Mozambique is primarily local in origin. Known locally as Al-Sunnah wa-Jama'ah and derogatorily as the Ansar al-Sunna, it was founded in the mid-2010s among marginalised Muslim youth in Mocímboa da Praia district, with ideological influences drawn from Tanzanian and Kenyan Salafist networks and from teachers who had studied in Saudi Arabia. Foreign fighters - primarily from Tanzania, Uganda, and Somalia, with some drawn from further afield including Syria and Afghanistan - provided military training and experience. The Islamic State formally recognised the movement as part of its Central Africa Province (ISCAP) in 2019, providing international branding, propaganda resources, and reportedly additional training and financing. The insurgency began with small attacks in October 2017 and escalated rapidly. The March 2021 attack on Palma - in which ISM fighters briefly overran the town adjacent to TotalEnergies' $20 billion LNG project - was the conflict's international turning point. The attack killed dozens of civilians, forced the evacuation of LNG project workers (including one group who were ambushed and killed while trying to flee), and prompted TotalEnergies to suspend the project entirely. It also triggered the deployments that reshaped the conflict's military dynamics: Rwanda's Rwanda Defence Force (July 2021) and the SADC Mission in Mozambique (SAMIM, July 15, 2021). The Rwanda-SAMIM intervention produced significant early gains. By 2022-2023, ISM had been driven from Mocímboa da Praia, Palma, and most of northern Cabo Delgado's major towns; the group was estimated to have reduced from thousands of fighters to a few hundred. But SAMIM withdrew in 2024 under funding pressures, and Rwanda's forces - which doubled to over 4,000-5,000 to compensate - found themselves facing a reconstituted ISM that had adapted its tactics: abandoning territorial control in favour of dispersion, mobile guerrilla operations, road ambushes, kidnapping-for-ransom, and deliberate targeting of infrastructure along the N380 highway. Between January and August 2025, Cabo Delgado recorded over 500 insurgent-related incidents. By late 2025 and early 2026, ISM had intensified operations across Macomia, Mocímboa da Praia, Palma, and surrounding districts, and a group of approximately 100 ISM fighters moved through the province's centre and south in late April-May 2026, targeting churches in Ancuabe and Chiúre districts (killing four civilians in Namacuili village on 8 May) and expanding operations into areas previously considered relatively secure. ISM has also consolidated control over segments of artisanal mining supply chains and road taxation in areas where military escorts are absent. As of June 2026, Rwanda has secured continued funding from Mozambique for its deployment, temporarily easing concerns about a Rwandan withdrawal that would create a catastrophic security vacuum.

Cabo Delgado's humanitarian crisis has displaced approximately 1.3 million people and killed over 6,400 since 2017 (ACLED). Atackers have deliberately targeted civilian infrastructure: churches, schools, health facilities, and markets. Beheadings, abductions, and attacks on those who fail to comply with ISM's religious codes have characterised the insurgency. The New Humanitarian (March 2026) reports that over 300,000 people have been displaced since July 2025 alone, as the insurgency's geographic expansion pushed into areas previously considered relatively safe. Resettlement centres are operating beyond capacity. The LNG project suspension has had enormous economic consequences for Mozambique as a whole, which had anticipated transformative gas revenues from 2024. Delays in the project's restart continue to postpone economic benefits while the humanitarian crisis deepens. The World Bank and IMF have cited the security situation as the principal constraint on Mozambique's economic development outlook.

As of mid-2026, the Mozambique Cabo Delgado insurgency is in a second phase characterised by ISM's adaptation to military pressure. The group has been driven from major towns and is estimated to have several hundred fighters; it cannot hold territory or conduct the large-scale operations of 2020-2021. But it remains operationally active across the province, conducts regular ambushes and raids on military convoys and civilian communities, exploits artisanal mining revenues and road taxation, and - as the April-May 2026 movements through central and southern Cabo Delgado demonstrate - maintains freedom of movement in areas outside Rwanda's direct operational zone. The ISS Africa's October 2025 analysis - 'Cabo Delgado insurgency persists amid failed military strategy' - captures the core strategic problem: Mozambique has 'achieved important military gains with external support, but failed to consolidate them.' Without genuine political and socioeconomic engagement with Cabo Delgado's Muslim communities, addressing the specific grievances around LNG exclusion and religious marginalisation, the insurgency will likely persist at varying levels of intensity for years or decades.

Short-Term (0-12 months) High. ISM will continue to conduct attacks in northern and central Cabo Delgado. The key risk variable is Rwanda's funding sustainability: if EU and bilateral contributions fail to cover the operational costs of Rwanda's deployment, the prospect of withdrawal or significant reduction in forces would create a security vacuum that ISM is prepared to exploit rapidly. Long-Term (3+ years) Long-term resolution of the Cabo Delgado insurgency requires a political strategy alongside the military one: genuine community engagement with Cabo Delgado's Muslim communities, a transparent revenue-sharing framework for LNG benefits, and a political process that addresses religious and ethnic marginalisation. Mozambique's government has resisted this approach for nearly a decade; regional and international pressure may be needed to change course.