America is developing a 'lily pad' strategy for global bases. The bases that America has in Germany are a thing of the past. Now, they'll simply use the military bases of other countries based upon agreements that they've signed with these sovereign states. So, when America needs to fly a drone to bomb a target in Burkina Faso - they may just use a base in northern Ghana.
It is important to note that America's military bases in Africa surround Nigeria
Nigeria is the closest thing to a black superpower, if it ever gets its act together. But it won't.