美国为了继续领导世界就必须承担责任。 布什政府的单边主义冲动由于其后果而受到非议，但是反过来，如今相互依存的世界中相互合作的重要性人们还是在摸索。
To make its case for a continued global leadership role, America must, however, step up to the plate.  While the go-it-alone impulse of the Bush administration has been discredited by its consequences, the inverse lessons regarding how important collaborative action is in today’s interconnected world are still being learned.