On May 1, 2004, the European Union expanded dramatically. Ten new countries on the periphery of the old union were absorbed, changing the EU in many ways. How can we redefine Europe now? What is its meaning? Is "Europe" just a theoretical concept or, worse yet, merely a small geographical region? Or, on the contrary, is Europe re-emerging as a Western civilization of its own, a North Atlantic partner? Many scholars believe that federalism should play the central role as 25 member states seek to cooperate fully while simultaneously retaining their sovereignty. This volume, with new and thought-provoking contributions by leading experts, clarifies the issues and proposes ways in which federalism can rescue and preserve the new Europe.