If there is an Obama Doctrine in the realm of foreign affairs, it comprises robust multilateralism—being multilateral when the U.S. can, unilateral when it must. Subjected to scrutiny, however, the Obama Doctrine can only work if the U.S. has capable and willing partners. Yet under conditions of widespread fiscal austerity among western allies—and the political austerity of skeptical western citizens—meeting the challenge of securing their...

