As one of the most innovative and influential thinkers in international relations for more than three decades, Robert O. Keohane's groundbreaking work in institutional theory has redefined our understanding of international political economy. Consisting of a selection of his most recent essays, this absorbing book address such core issues as interdependence, institutions, the development of international law, globalization and global governance. The essays are placed in historical and intellectual context by a substantial new introduction outlining the developments in Keohane's thought, and in an original afterword, the author offers a challenging interpretation of the September 11th attacks and their aftermath. Undoubtedly, this book is essential reading for anyone with an interest in international relations.