"Welcome edited volume on nuclear nonproliferation . . . the contributors deserve substantial credit for developing a useful concept, exploring its implications, pulling the concept into explanatory propositions drawn from various theories, and testing the hypotheses on a set of relevant cases."James Lebovic, Perspectives on Politics "Knopf has assembled a respected field of scholars as contributors, producing a well-edited work that maintains a consistent, disciplined focus across chapters . . . Recommended."C. W. Sherrill, CHOICE "This sophisticated and detailed study of security assurances provides new insights into the dynamics of nuclear proliferation and non-proliferation. It is an important contribution to both International Relations theory and policy-relevant research on nuclear deterrence."Scott D. Sagan, Professor of Political Science, Stanford University "Security assurance has been a powerful tool for encouraging states to forgo nuclear weapons acquisition. Yet the knowledge of it, especially the conditions under which it fails or succeeds, remains sparse. Here is the first major book that rectifies this weakness. The volume offers some outstanding ideas for both policymakers and scholars."T. V. Paul, James McGill Professor of International Relations, McGill University