FILE PHOTO: A general view shows the damage at a camp for displaced people after an attack by suspected members of the Islamist Boko Haram insurgency in Dalori, Nigeria November 1, 2018. REUTERS/Kolawole Adewale/File Photo
Damage at a camp for displaced people after an attack by suspected members of the Islamist Boko Haram insurgency in Nigeria in 2018. Reuters 

ICC chief prosecutor to open Nigeria war crimes investigation