America's combination of political, military, economic and cultural predominance is without precedent, and there is nothing on the horizon that suggests the speedy demise of its hegemony.  However, history and theory suggest that this cannot last.  Joffe's advice to the American Gulliver is 'restrain yourself'.  He warns against the costs of continued unilateralism and argues for an updated version of postwar multilateralism, or 'Golden Age of American diplomacy'.