This short essay, prepared for a panel on “The Impact of a Wider Dissemination of Human Rights Norms: Fragmentation or Unity?,” explores the connection between two popular, but seemingly contradictory discourses in international law: fragmentation and constitutionalization. After disentangling and categorizing the various types of fragmentation international law may be experiencing, the essay focuses in on one form in particular, the “fragmentation of the legal community.” This most radical version of fragmentation, the essay argues, has spurred a number of responses, many of which suggest the beginnings of a constitutional conflicts regime for international law. The essay ends by suggesting and exploring three types of constitutional conflicts rules already in limited use: (1) constitutional comity rules, (2) constitutional hierarchy rules, and (3) constitutional abstention rules.

The current system of international law is experiencing profound transformations. Indeed, the simultaneous processes of globalization combined with the disintegration of international systems of governance and law-making pose complex challenges for legal scholarship. The doctrinal response to these challenges has been theorized within two seemingly contradictory discourses in international law: fragmentation and constitutionalisation. This book takes an innovative approach to international law, viewing the processes of the fragmentation and constitutionalisation as being profoundly interconnected and reflective of each other. It brings together a select group of contributors, including both established and emerging scholars and practitioners, in order to explore the ways in which the problems of fragmentation and constitutionalisation are viscerally linked one to the other and thus mutually conditioning and stimulating. The book considers the theory and practice of international law looking at the two phenomena in relation to the various fields of international law such as international criminal law, cultural heritage law and international environmental law.

The current system of international law is experiencing profound transformations. Indeed, the simultaneous processes of globalization combined with the disintegration of international systems of governance and law-making pose complex challenges for legal scholarship. The doctrinal response to these challenges has been theorized within two seemingly contradictory discourses in international law: fragmentation and constitutionalisation. This book takes an innovative approach to international law, viewing the processes of the fragmentation and constitutionalisation as being profoundly interconnected and reflective of each other. It brings together a select group of contributors, including both established and emerging scholars and practitioners, in order to explore the ways in which the problems of fragmentation and constitutionalisation are viscerally linked one to the other and thus mutually conditioning and stimulating. The book considers the theory and practice of international law looking at the two phenomena in relation to the various fields of international law such as international criminal law, cultural heritage law and international environmental law.

Exploring the role of the International Court of Justice in the re-convergence of international law, this book contends that the court's jurisprudence is transforming traditional concepts such as sovereignty, rights and jurisdiction and in so doing is leading a trend towards the reunification of international law.

The book examines one of the most debated issues in current international law: to what extent the international legal system has constitutional features comparable to what we find in national law. This question has become increasingly relevant in a time of globalization, where new international institutions and courts are established to address international issues. Constitutionalization beyond the nation state has for many years been discussed in relation to the European Union.This book asks whether we now see constitutionalization taking place also at the global level.The book investigates what should be characterized as constitutional features of the current international order, in what way the challenges differ from those at the national level and what could be a proper interaction between different international arrangements as well as between the international and national constitutional level. Finally, it sketches the outlines of what a constitutionalized world order could and should imply. The book is a critical appraisal of constitutionalist ideas andof their critique. It argues that the reconstruction of the current evolution of international law as a process of constitutionalization -against a background of, and partly in competition with, the verticalization of substantive law and the deformalization and fragmentation of international law-has some explanatory power, permits new insights and allows for new arguments.The book thus identifies constitutional trends and challenges in establishing international organisational structures, and designs procedures for standard-setting, implementation and judicial functions.

This major extension of existing scholarship on the fragmentation of international law utilises the concept of 'regimes' from international law and international relations literature to define functional areas such as human rights or trade law. Responding to existing approaches, which focus on the resolution of conflicting norms between regimes, it contains a variety of critical, sociological and doctrinal perspectives on regime interaction. Leading international law scholars and practitioners reflect on how, in situations of diversity and concurrent activity, such interaction shapes and controls knowledge and norms in often hegemonic ways. The contributors draw on topical examples of interacting regimes, including climate, trade and investment regimes, to argue for new methods of regime interaction. Together, the essays combine approaches from international, transnational and comparative constitutional law to provide important insights into an issue that continues to challenge international legal theory and practice.

Constitutionalization of world politics is emerging as an unintended consequence of international treaty making driven by the logic of democratic power. The analysis will appeal to scholars of International Relations and International Law interested in international cooperation, as well as institutional and constitutional theory and practice.

Many constitutions include provisions intended to limit the discretion of governments in economic policy. In times of financial crises, such provisions often come under pressure as a result of calls for exceptional responses to crisis situations. This volume assesses the ability of constitutional orders all over the world to cope with financial crises, and the demands for emergency powers that typically accompany them. Bringing together a variety of perspectives from legal scholars, economists, and political scientists, this volume traces the long-run implications of financial crises for constitutional order. In exploring the theoretical and practical problems raised by the constitutionalization of economic policy during times of severe crisis, this volume showcases an array of constitutional design options and the ways they channel governmental responses to emergency.

Global Perspectives on Subsidiarity is the first book of its kind exclusively devoted to the principle of subsidiarity. It sheds new light on the principle and explores and develops the many applications of the principle of subsidiarity. The book provides a comprehensive overview of the principle in all its facets, from its philosophical origins in the writings of Aristotle and Aquinas, to its development in Catholic social doctrine, and its emergence as a key principle in European Union Law. This book explores the relationship between subsidiarity and concepts such as sphere sovereignty and social pluralism. It analyses subsidiarity in light of globalisation, federalism, democracy, individual rights and welfare, and discusses subsidiarity and the Australian, Brazilian and German Constitutions.​