Robert Kagan created quite a stir in early 2003 with his proposed answer to this question. In his seminal essay Of Paradise and Power, he draws a fairly convincing picture of a growing postwar ideological gap between a rule-bound, multilateralist and “Kantian” Europe and a power-driven, unilateralist “Hobbesian” America. Viewed through.
Robert Kagan: Power and Weakness. I've posted references to articles that are a reaction to an essay by Robert Kagan about America and Europe. It seems appropriate to post a link to the Kagan article so that any interested readers can read it.