might actually work? are critics at home being unfair to this approach? >> on the one hand, i think some of the criticisms have validity to it. there are uncertainties, but on the other hand, you have to weigh that against a lot of people alive today who wouldn't be otherwise. and another criticism made that has validity is that we're inconsistent. we intervene in libya and we don't in ivory coast. that's true, too. but i would rather inconsistently safe some lives than consistently save none. >> we want to thank nick kristof, of course. and up next, what on earth are steven segal and george arpaio doing in a tank together? we'll tell you.