International law is a system of rules and principles that regulates behaviour between international actors in the present, but is based on what is expected to happen in the future. This book explores how risk and uncertainty are imagined, articulated, and managed across the various fields of international law.

This publication presents recent OECD papers on risk and regulatory policy. They offer measures for developing, or improving, coherent risk governance policies.

Mainstream international relations continues to assume that the world is governed by calculable risk based on estimates of power, despite repeatedly being surprised by unexpected change. This ground breaking work departs from existing definitions of power that focus on the actors' evolving ability to exercise control in situations of calculable risk. It introduces the concept of 'protean power', which focuses on the actors' agility as they adapt to situations of uncertainty. Protean Power uses twelve real world case studies to examine how the dynamics of protean and control power can be tracked in the relations among different state and non-state actors, operating in diverse sites, stretching from local to global, in both times of relative normalcy and moments of crisis. Katzenstein and Seybert argue for a new approach to international relations, where the inclusion of protean power in our analytical models helps in accounting for unforeseen changes in world politics.

The regulation of risk is a preoccupation of contemporary global society and an increasingly important part of international law in areas ranging from environmental protection to international trade. This book examines a key aspect of international risk regulation - the way in which science and technical expertise are used in reaching decisions about how to assess and manage global risks. An interdisciplinary analysis is employed to illuminate how science has been used in international legal processes and global institutions such as the World Trade Organization. Case studies of risk regulation in international law are drawn from diverse fields including environmental treaty law, international trade law, food safety regulation and standard-setting, biosafety and chemicals regulation. The book also addresses the important question of the most appropriate balance between science and non-scientific inputs in different areas of international risk regulation.

The Constitution of Risk is the first book to combine constitutional theory with the theory of risk regulation. The book argues that constitutional rulemaking is best understood as a means of managing political risks. Constitutional law structures and regulates the risks that arise in and from political life, such as an executive coup or military putsch, political abuse of ideological or ethnic minorities, or corrupt self-dealing by officials. The book claims that the best way to manage political risks is an approach it calls "optimizing constitutionalism" - in contrast to the worst-case thinking that underpins "precautionary constitutionalism," a mainstay of liberal constitutional theory. Drawing on a broad range of disciplines such as decision theory, game theory, welfare economics, political science, and psychology, this book advocates constitutional rulemaking undertaken in a spirit of welfare maximization, and offers a corrective to the pervasive and frequently irrational attitude of distrust of official power that is so prominent in American constitutional history and discourse.

This book traces the evolution of environmental principles from their origins as vague political slogans reflecting fears about environmental hazards to their embodiment in enforceable laws. Environmental law has always responded to risks posed by industrial society but the new generation of risks have required a new set of environmental principles, emerging from a combination of public fears, science, ethics, and established legal practice. This book shows how three of the most important principles of modern environmental law grew out of this new age of ecological risk: the polluter pays principle, the preventive principle, and the precautionary principle. Since the first edition was published, the principles of polluter-pays, prevention, and precaution have been encapsulated in a swathe of legislation at domestic and international level. Courts have been invoking environmental law principles in a broad range of cases, on issues including GMOs, conservation, investment, waste, and climate change. As a result, more States are paying heed to these principles as catalysts for improving their environmental laws and regulations. This edition will integrate to a greater extent the relationship between environmental principles and human rights. The book analyses new developments including the EU Charter of Fundamental Rights, the case law of the European Court of Human Rights, which has continuously carved out environmental duties from a number of rights enshrined in the European Convention of Human Rights, and the implementation of the UNECE Convention on Access to Information.

Due Diligence in International Law identifies due diligence as the missing link between state responsibility and international liability. Acknowledged in all legal fields, it ensures international peaceful cooperation and prevents significant transboundary harm, yet it has thus far not been comprehensively discussed in literature. The present volume fills this void. Kulesza identifies due diligence as a principle of international law and traces its evolution throughout centuries. The no-harm principle, key to identifying responsibility for transboundary harm, focal to international environmental law and applicable to e.g. combating terrorism, follows states’ obligation of due diligence in preventing foreign harm. This obligation, present in various treaty-based and customary regimes is argued to be a principle of international public law applicable to all obligations of conduct.