Providing a fresh, interdisciplinary perspective on ISDS through the constructivist theory of international relations, this book argues that reforming ISDS can contribute to the legalization of international investment law, but such a contribution is subject to both "institutional" and "internal" limitations. Chapters investigate the notion of legalization in the context of international investment law, the limitations of adjudicative bodies in advancing the legitimacy of international law, and the relationship between the level of shared understandings and choices of institutionalization. Based on comparative studies of international regimes, this book cautions against radically institutionalizing the dispute settlement regime through the establishment of the multilateral investment court.

The novel perspectives presented in this book will be of interest to scholars and researchers in arbitration and dispute resolution, international economic law, and investment law. It will also be beneficial to legal experts in international organizations working on the reform of ISDS and investment law.