Attacks by non-state armed groups are a security challenge in the Sahel, including Nigeria.
In northern Nigeria, the activities of Jama'at Ahl al-Sunna li al-Da'wa wa al-Jihad (also known as Boko Haram), Islamic State West Africa Province (ISWAP) and Jama’atu Ansarul Muslimina fi Biladis Sudan (Ansaru) contribute to the instability of the Nigerian state.
On 16 August 2025, Nuhu Ribadu, Nigeria’s national security adviser, announced the arrest of two leaders of Ansaru: Mahmud Muhammad Usman and Mahmud al-Nigeri.
