My best guess about this is that Obama is doing it for two reasons:
1. He thinks it will help secure him the black vote in 2012, since he can tell them: “See how much I’m doing to help your black ancestors, something no white President has ever done.”
2. If he loses, then he leaves the White Republican President a nice Tar Baby to deal with first thing in office.
The leaders in that part of the world helped the U.S. get some nasty Moslems (pirates?) a while back, and we promised them help with Kony in return.
But this Administration doesn’t bother with things like explanations, because he prefers to rule by decree.