Recent discoveries in psychology and neuroscience have improved our understanding of why our decision making processes fail to match standard social science assumptions about rationality. As researchers such as Daniel Kahneman, Amos Tversky, and Richard Thaler have shown, people often depart in systematic ways from the predictions of the rational actor model of classic economic thought because of the influence of emotions, cognitive biases, an aversion to loss, and other strong motivations and values. These findings about the limits of rationality have formed the basis of behavioral economics, an approach that has attracted enormous attention in recent years. This collection of essays applies the insights of behavioral economics to the study of nuclear weapons policy. Behavioral economics gives us a more accurate picture of how people think and, as a consequence, of how they make decisions about whether to acquire or use nuclear arms. Such decisions are made in real-world circumstances in which rational calculations about cost and benefit are intertwined with complicated emotions and subject to human limitations. Strategies for pursuing nuclear deterrence and nonproliferation should therefore, argue the contributors, account for these dynamics in a systematic way. The contributors to this collection examine how a behavioral approach might inform our understanding of topics such as deterrence, economic sanctions, the nuclear nonproliferation regime, and U.S. domestic debates about ballistic missile defense. The essays also take note of the limitations of a behavioral approach for dealing with situations in which even a single deviation from the predictions of any model can have dire consequences.

Nuclear Weapons under International Law is a comprehensive treatment of nuclear weapons under key international law regimes. It critically reviews international law governing nuclear weapons with regard to the inter-state use of force, international humanitarian law, human rights law, disarmament law, and environmental law, and discusses where relevant the International Court of Justice's 1996 Advisory Opinion. Unique in its approach, it draws upon contributions from expert legal scholars and international law practitioners who have worked with conventional and non-conventional arms control and disarmament issues. As a result, this book embraces academic consideration of legal questions within the context of broader political debates about the status of nuclear weapons under international law.

Nuclear Reactions analyzes how nuclear weapons change the calculations states make in their foreign policies, why they do so, and why nuclear weapons have such different effects on the foreign policies of different countries. Mark S. Bell argues that nuclear weapons are useful for more than deterrence. They are leveraged to pursue a wide range of goals in international politics, and the nations that acquire them significantly change their foreign policies as a result. Closely examining how these effects vary and what those variations have meant in the United States, the United Kingdom, and South Africa, Bell shows that countries are not generically "emboldened"—they change their foreign policies in different ways based on their priorities. This has huge policy implications: What would Iran do if it were to acquire nuclear weapons? Would Japanese policy toward the United States change if Japan were to obtain nuclear weapons? And what does the looming threat of nuclear weapons mean for the future of foreign policy? Far from being a relic of the Cold War, Bell argues, nuclear weapons are as important in international politics today as they ever were. Thanks to generous funding from the University of Minnesota and its participation in TOME, the ebook editions of this book are available as Open Access volumes, available from Cornell Open (cornellpress.cornell.edu/cornell-open) and other repositories.

This book examines the law relating to the possession, threat or use of nuclear weapons. By addressing in logical sequence the law regarding sovereignty, the threat or use of force, the conduct of nuclear hostilities, neutrality, weapons law and war crimes, the book illustrates the topics that an effective national command, control and communications system for nuclear weapons must address. Guidance is given on intractable issues, such as the responsibilities of remote submarine commanders. The continuing relevance of the ICJ's Nuclear Advisory Opinion is assessed, and the prospects for the Treaty on the Prohibition of Nuclear Weapons are discussed. The book has been written in an accessible style so that it will be equally useful to lawyers and practitioners, including relevant commanders, politicians, policy staffs and academics. The objective is to state the law accurately and to explain its implications and provide practical guidance in this most sensitive area. This book is also available as open access.

Since the Hiroshima and Nagasaki attacks, no state has unleashed nuclear weapons. What explains this? According to the author, the answer lies in a prohibition inherent in the tradition of non-use, a time-honored obligation that has been adhered to by all nuclear states—thanks to a consensus view that use would have a catastrophic impact on humankind, the environment, and the reputation of the user. The book offers an in-depth analysis of the nuclear policies of the U.S., Russia, China, the UK, France, India, Israel, and Pakistan and assesses the contributions of these states to the rise and persistence of the tradition of nuclear non-use. It examines the influence of the tradition on the behavior of nuclear and non-nuclear states in crises and wars, and explores the tradition's implications for nuclear non-proliferation regimes, deterrence theory, and policy. And it concludes by discussing the future of the tradition in the current global security environment.

Why have nuclear weapons not been used since Hiroshima and Nagasaki in 1945? Nina Tannenwald disputes the conventional answer of 'deterrence' in favour of what she calls a nuclear taboo - a widespread inhibition on using nuclear weapons - which has arisen in global politics. Drawing on newly released archival sources, Tannenwald traces the rise of the nuclear taboo, the forces that produced it, and its influence, particularly on US leaders. She analyzes four critical instances where US leaders considered using nuclear weapons (Japan 1945, the Korean War, the Vietnam War, and the Gulf War 1991) and examines how the nuclear taboo has repeatedly dissuaded US and other world leaders from resorting to these 'ultimate weapons'. Through a systematic analysis, Tannenwald challenges conventional conceptions of deterrence and offers a compelling argument on the moral bases of nuclear restraint as well as an important insight into how nuclear war can be avoided in the future.