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A mother cries for her missing daughter abducted in 2014 by Boko Haram Islamists, during a march to press for the release of the schoolgirls kidnapped in 2014 from their school in Chibok by the Islamist group, in Abuja on January 14, 2016. Parents of the some 200 girls kidnapped by Boko Haram in April 2014, marched along with members of the civil society and the "Bring Back Our Girls" movement, towards the presidency to press for speedy rescue of the schoolgirls, as Nigeria's government declared the Islamist group "technically defeated". / AFP / STRINGER (Photo credit should read STRINGER/AFP/Getty Images)

A mother cries for her missing daughter abducted in 2014 by Boko Haram Islamists, during a march to press for the release of the schoolgirls kidnapped in 2014 from their school in Chibok by the Islamist group, in Abuja on January 14, 2016. 
Parents of the some 200 girls kidnapped by Boko Haram in April 2014, marched along with members of the civil society and the "Bring Back Our Girls" movement, towards the presidency to press for speedy rescue of the schoolgirls, as Nigeria's government declared the Islamist group "technically defeated".   / AFP / STRINGER        (Photo credit should read STRINGER/AFP/Getty Images)