MAIDUGURI, Nigeria—A joint military force from Nigeria, Niger, and Cameroon said on Sunday it had killed more than 100 Islamist terrorists, including 10 commanders, in the past few weeks, as it intensifies a ground and air offensive in the Lake Chad region.
Boko Haram fighters and its splinter ISIS West Africa Province (ISWAP) group have for more than a decade battled the Nigerian army in a conflict that has sucked in neighbouring states.