mccain's approach to this is an example of a more general problem. that we often see mostly among pundits, but even u.s. administrations, that is this desire to pick a good guy and a bad guy and to make a public declaration. >> and the danger on the other side, because i want to argue with myself, is there are certain circumstances where i don't think there's anything really defensible about that government. i mean it seems you could also end up in this weird place of playing apologetics for regimes that are irredeemable evil, as i believe the assad regime is. how do you keep that moral clarify in your head on one level and also not decide that the world is a risk board that you have to be essentially entering into every international conflict on. >> that's a fundamental question to ask, chris. i work for an anti-atrocity crimes against humanity