If not war, what then? We know the central foreign policy principle of Bush critics: multilateralism. Kerry and the Democrats have said it a hundred times: The source of our troubles is Bush’s insistence on “going it alone.” They promise to “rejoin the community of nations” and “work with our allies.” Well, that happens to be exactly what we have been doing on Iran. And the policy is an abject failure. The Bush administration, having decided that invading one axis-of-evil country was about as much as either the military or the country could bear, has gone multilateral on Iran, precisely...