So President Obama has his own doctrine now, because Wolf Blitzer tells us so. It is basically what Ross Douhat of the New York Times called the “liberal way of war” in a column on March 20. Libya is the “beau ideal of a liberal internationalist intervention” – humanitarian, multilateral and limited. This is the same columnist who just six weeks before called claimed that the President’s “foreign policy has owed far more to conservative realpolitik than to any left-wing vision of international affairs.” So which is it? Is Obama a liberal internationalist or a realist, seeing as the two are...