 Boko Haram has split. There is an IS West Africa group that is fighting against Boko Haram, sometimes cooperating with them. It's very complex, very chaotic, and it's destabilizing a lot of countries that were actually on a pretty good path. You're listening to Weekend from the BBC World Service with me, Julian Warwick, and with me throughout the program, Peter Neumann and Kadri Leake. More to come from them in our next hour. The latest news headlines coming up in a moment.