The challenges that the European Union faces today are legion: to promote deep economic interdependence, stabilize cross-national finance, resolve regulatory disputes, manage transnational environmental externalities, and coordinate foreign policy. They are also those every country will soon face, if it does not already. This volume collects the insights of some of the most thoughtful academics, politicians, and policy analysts about Europe's long-term trajectory. Their views are idiosyncratic, as one might expect looking two decades into the future -- but all the more interesting as a result. Although the contributors rightly reject lurid scenarios of Islamization or the appeasement of terrorists as groundless, one might argue that this book (like most analyses of Europe these days) is more pessimistic than the facts warrant. It dwells on Europe's squandered potential in security and economic cooperation. Yet the EU has enlarged to 27 members, introduced the euro, established its own security forces, formed a single market, and dissolved borders in the Schengen area. What region of the world has achieved more in the past two decades?