MAIDUGURI, Nigeria, Jan 29 (Reuters) - Islamist militants backed by armed drones raided an army base in Nigeria's northeastern Borno state, killing several troops in the early hours of Thursday, the military said, in the second assault reported there this week.
The use of drones by the fighters from Islamic State West Africa Province (ISWAP) in recent attacks has marked a significant escalation in the violence in the region, military spokesman Lieutenant-Colonel Sani Uba said.
