@hawkeye10,
I think the truth here is that there are no courses of action (or inaction) available to us or the President that don't involve either risks, uncertainty or likely bad side effects. It's a lot easier to criticize any particular course of action in such a situation than it is to determine what you WILL do and say. I have suggested that we do nothing in Libya mostly to give the critics of the world a taste of the absence of American involvement or leadership. Easy for me to say, in that I don't have any political or moral responsibility for what occurs in Libya. Obama, however doesn't have that luxury: he must do and say something, and, whatever choices he makes will involve contradictions and risks.
Obama has also had to face the contradictions with criticisms he levelled at his predecessor on a host of issues, ranging from the Libya situation to the dispositions of our prisoners in Gitmo. This too is a part of the fate of anyone who pursues a prominent place in government. Life and unfolding events have a way of exposing one's earlier mistakes and unjust criticisms. No one is immune to these matters, and the issue really is determined by how, in the long run, he deals with them. It takes grace, courage and endurance to deal with all this. I hope Obama does it all well: we shall see....