The U.S. military carried out a strike against the leader of the militant group al-Shabab in Somalia yesterday. The counterterrorism operation targeted Mukhtar Abu Zubeyr, widely known as Godane, a Kenyan native who was the alleged mastermind behind the attack on an upscale shopping mall in Nairobi last year. The Pentagon has not confirmed the outcome, but Somali officials say Godane was killed. The strike comes as U.S. has been expands its drone operations in Africa. We explore the growing U.S. counterterrorism presence in Africa.