U.S. Secretary of State John Kerry arrives for the inauguration of Nigeria's President Muhammadu in Abuja...
U.S. Secretary of State John Kerry arrives for the inauguration of Nigeria's President Muhammadu in Abuja May 29, 2015. Buhari vowed on Friday to eradicate the "mindless, godless" militant group Boko Haram and rescue hundreds of women and children held captive, including 200 girls taken from the town of Chibok a year ago. REUTERS/Akintunde Akinleye