Last week, Nigerian President Muhammadu Buhari sacked his military chiefs. Since then, at least 20 more people have been killed in Boko Haram led motorcycle attacks. The military shakeup comes ahead of a scheduled meeting with President Barack Obama this morning. We talk about Boko Haram, the military firings, and the upcoming meeting between Obama and Buhari, with Richard Joseph. Joseph is the John Evans professor of International History and Politics at Northwestern University, and a senior fellow at the Brookings Institute. (Photo: Flickr/Global Panorama)