Esther Yakubu, left, mother of one of hundreds of kidnapped school girls, watches a video released by Boko Haram during a briefing in Abuja, Nigeria, on August 14, 2016. A military spokesman threatened journalist Ahmad Salkida with terrorism charges if he does not provide information he gained in the course of reporting on the militant group. (AP Photo/Olamikan Gbemiga)
Esther Yakubu, left, mother of one of hundreds of kidnapped school girls, watches a video released by Boko Haram during a briefing in Abuja, Nigeria, on August 14, 2016. A military spokesman threatened journalist Ahmad Salkida with terrorism charges if he does not provide information he gained in the course of reporting on the militant group. (AP Photo/Olamikan Gbemiga)

Nigerian military threatens journalist for not revealing sources