Nigerian President Muhammadu Buhari (C) poses on October 19, 2016 with the 21 Chibok girls who were released by Boko Haram last week, at the State House in Abuja, Nigeria. Speaking at the presidential villa in Nigeria’s capital of Abuja, Buhari addressed the girls and their families saying ‘we shall redouble efforts to ensure that we fulfil our pledge of bringing the remaining girls back home’. (AFP/Philip OJISUA)