Nigeria has been rocked by two mass abductions from schools in the past week, with over 300 children taken by armed gangs in the conflict-battered north.
A tally by The Associated Press shows at least 1,799 students have been seized in a dozen of the largest abductions since the 2014 Chibok attack in which Boko Haram militants seized 276 schoolgirls, sparking global outrage. Most of the children have been released, many after ransoms were paid. Others have escaped.
