Nigeria's leader meets Chibok girls, vows to free the rest

Nigeria's president on Wednesday vowed to "redouble" efforts to secure the release of nearly 200 schoolgirls who remain missing more than two years after being abducted by Boko Haram extremists.

President Muhammadu Buhari met for the first time with the 21 Chibok schoolgirls who were released last week after negotiations with Boko Haram.

Buhari said they would be reintegrated into society "as quickly as possible".