What can be done? Africa is a basket case from stem to stern. We find hope when some leader can cut the AIDS rate from 30% to 15% by preaching a modicum of sexual responsibility. Intervention doesn't work. Non-intervention doesn't work. Aid doesn't work. Carrots don't work. Sticks don't work. I wish that I could propose some great conservative answer with parts of Milton Friedman and Thomas Jefferson, but there's nothing that can be done for a very long time.
Serious sanctions would go a long way. We did it with South Africa. Then again, we're playing tiddlywinks with China so I shouldn't expect much to be done about Zimbabwe. Anyway, there's a reason why I don't talk much about these issues anymore on FR and I've been reminded why.