With Bin Laden gone, what becomes of the militant groups in Africa he has inspired?<br /><br />Al-Qaeda-linked groups have claimed responsibility for deadly attacks in Niger, Mali, Mauritania, Algeria, and Nigeria. <br /><br />African leaders have welcomed the killing of Osama bin Laden. <br /><br />But several of them are questioning the nature of the killing and warning of retaliatory attacks. <br /><br />Al Jazeera's Yvonne Ndege reports from Abuja, Nigeria
