Ambassador Rockwell A. Schnabel and Francis X. Rocca give readers a compelling and provocative inside look at the people and issues that will decide whether the world's most consequential partnership flourishes or flounders. While alerting readers to the economic and geopolitical challenges posed by a stronger EU, the authors reject the complacency of those who see American unipolarity as a license to neglect our allies, or those who entertain the illusion that we can divide and conquer Europe. This book will make clear why the U.S. must work with the EU-or expect the EU to work against it.