This Commentary systematically and comprehensively examines the various sources of general international law relevant to international investment law and arbitration.

Developments within various sub-fields of international law influence international investment law, but changes in investment law also have an impact on the evolution of other fields within international law. Through contributions from leading scholars and practitioners, this book analyses specific links between investment law and other sub-fields of international law such as the law on armed conflict, human rights, sustainable development, trade, development and EU law. In particular, this book scrutinises how concepts, principles and rules developed in the context of such sub-fields could inform the content of investment law. Solutions aimed at resolving problems in other settings may provide instructive examples for addressing current problems in the field of investment law, and vice versa. The underlying question is whether key sub-fields of public international law, notably international investment law, are open to cross-fertilisation, or, whether they are evolving further into self-contained regimes.

Transnational investment involves a variety of actors (States, public and private legal entities, and natural persons) whose relationships are governed by rules and legal instruments belonging to different legal systems. This book provides a systematic study of the sources of rights and obligations in the field of transnational investment, and their coordination and interaction. It focuses primarily on the network of over 3,000 Bilateral Investment Treaties, international investment contracts, customary international law, the main multilateral treaties, national legislation, international case law and general principles of law. The book, firmly based on State practice, arbitral awards and national decisions, is indispensable to fully appraise the nature and content of the claims of private investors as well as to identify the law applicable in investment arbitration.

International investment law is in transition. Whereas the prevailing mindset has always been the protection of the economic interests of individual investors, new developments in international investment law have brought about a paradigm shift. There is now more than ever before an interest in a more inclusive, transparent, and public regime. Shifting Paradigms in International Investment Law addresses these changes against the background of the UNCTAD framework to reform investment treaties. The book analyses how the investment treaty regime has changed and how it ought to be changing to reconcile private property interests and the state's duty to regulate in the public interest. In doing so, the volume tracks attempts in international investment law to recalibrate itself towards a more balanced, less isolated, and increasingly diversified regime. The individual chapters of this edited volume address the contents of investment agreements, the system of dispute settlement, the interrelation of investment agreements with other areas of public international law, constitutional questions, and new regional perspectives from Europe, South Africa, the Pacific Rim Region, and Latin America. Together they provide an invaluable resource for scholars, practitioners, and policymakers. The individual chapters of this edited volume address the contents of investment agreements, the system of dispute settlement, the interrelation of investment agreements with other areas of public international law, constitutional questions, and new regional perspectives from Europe, South Africa, the Pacific Rim Region, and Latin America. Together they provide an invaluable resource for scholars, practitioners, and policymakers.

Analyses how solutions for resolving problems in investment law contribute to addressing problems in other international legal settings, and vice versa.

The book considers the ways in which the international investment law regime intersects with the human rights regime, and the potential for clashes between the two legal orders. Within the human rights regime states may be obligated to regulate, including a duty to adopt regulation aiming at improving social standards and conditions of living for their population. Yet, states are increasingly confronted with the consequences of such regulation in investment disputes, where investors seek to challenge regulatory interferences for example in expropriation claims. Regulatory measures may for instance interfere with the investment by imposing conditions on investors or negatively affecting the value of the investment. As a consequence, investors increasingly seek to challenge regulatory measures in international investment arbitration on the basis of a bilateral investment treaty. This book sets out the nature and the scope of the right to regulate in current international investment law. The book examines bilateral investment treaties and ICSID arbitrations looking at the indicative parameters that are granted weight in practice in expropriation claims delimiting compensable from non-compensable regulation. The book places the potential clash between the right to regulate and international investment law within a theoretical framework which describes the stability-flexibility dilemma currently inherent within international law. Lone Wandahl Mouyal goes on to set out methods which could be employed by both BIT-negotiators and adjudicators of investment disputes, allowing states to exercise their right to regulate while at the same time providing investors with legal certainty. The book serves as a valuable tool, an added perspective, for academics as well as for practitioners dealing with aspects of international investment law.

Presents a collection of essays.

Patrick Dumberry provides a comprehensive analysis of the rules of customary international law in the field of international investment law.

At first glance, one may think of international investment law as a response to custom (or lack thereof), instead of a field of its application. However, in fact, the opposite is the case. The interpretation and application of customary rules and principles are the bread and butter of international investment law and arbitration. With a diverse range of expert contributors, this collection traces how customary international law is practised in international investment law. It considers how custom should be interpreted and how its rules and principles should be understood and applied by investor-state arbitral tribunals. Raising and addressing vital questions surrounding custom and international law, this collection is a necessary contribution to the scholarship of the theory and history of customary international law and international investment law. This title is also available as Open Access on Cambridge Core.

This book outlines the principles behind the international law of foreign investment. The main focus is on the law governed by bilateral and multilateral investment treaties. It traces the purpose, context, and evolution of the clauses and provisions characteristic of contemporary investment treaties, and analyses the case law, interpreting the issues raised by standard clauses. Particular consideration is given to broad treaty-rules whose understanding in practice has mainly been shaped by their interpretation and application by international tribunals. In addition, the book introduces the dispute settlement mechanisms for enforcing investment law, outlining the operation of Investor-State arbitration. Combining a systematic analytical study of the texts and principles underlying investment law with a jurisprudential analysis of the case law arising in international tribunals, this book offers an ideal introduction to the principles of international investment law and arbitration, for students, scholars, and practitioners alike.