One of the things that’s starting to emerge on the Republican side of the political struggle is a world view that can be called the Palin Doctrine. It’s remarkable that none of the other leading figures in the party has come to be associated with a particular foreign policy trajectory. Can one think, say, of a Pawlenty Doctrine or a Daniels Doctrine or a even a Perry or a Schwartzenegger or a Romney Doctrine? They each have their own bona fides, but developing the outlines of a coherent foreign policy view isn’t one of them. Governor Palin, by contrast, has...