For sheer cruelty, they are well matched. They also share an apocalyptic "end-of-days" vision. Now there are signs that Boko Haram -- the most feared group in West Africa -- may be edging toward a formal pledge of allegiance to ISIS.
A top Turkish official is blaming British authorities for the disappearance of three teenage British girls suspected of traveling from London to Turkey with the goal of joining ISIS in neighboring Syria.
An explosion Tuesday at a bus station in the northeastern Nigerian town of Potiskum killed at least 13 people and injured 25 others, a representative of Nigeria's National Emergency Management Agency said.