This is the first book to be published in the Oxford University Press Series on International Economic Law since the passing of its first editor, the great Professor John H Jackson. Professor Jackson was a warm and generous friend and mentor with a keen intellect and unending energy, who is recognized as the founder of the field of international economic law. We pay our respects to his family and friends and wish to acknowledge the enormous contribution he made to this field over his lifetime. As we continue our role as editors of the series, we cannot but feel his absence and only hope to be able to honour his legacy in small ways. As relative newcomers to this role, our ambitions are modest. We hope to encourage interest in the broad contours of international economic law, heightening awareness of its significance across the globe as well as its continuous interactions with other areas, such as public policy concerning public health and the environment, international dispute settlement and other aspects of public international law, sustainable development, and other disciplines, including economics and political science. We encourage submissions to the series from senior scholars as well as newer voices, academics as well as practitioners, from doctrinal, theoretical and empirical perspectives, and from countries around the world. While several of the debates today concerning international economic law perpetuate those of many decades, we believe that the current moment offers particularly exciting opportunities for thoughtful and rigorous scholarly contributions to have a meaningful impact on national and international law and policy. Developments in the World Trade Organization, new approaches to regional and plurilateral negotiations, and reform proposals in relation to investment treaty arbitration all offer room for a diversity of views that will benefit from engagement and collaboration.