Pivotal DeterrenceAs the preponderant world power, the United States is a potential arbiter of war and peace between such feuding rivals as India and Pakistan, Turkey and Greece, China and Taiwan. How can it deter them from going to war and impel them to accept compromise without firmly choosing sides? This age old strategic dilemma, which Timothy W. Crawford calls "pivotal deterrence," has become a central challenge of international security in today's unipolar world.