'Rules and Practices of International Investment Law and Arbitration is a remarkably clear and accessible treatment of what is currently the most complex and dynamic area of international law. While established substantive and procedural concepts are thoroughly explained, Professor Radi does not shy from revealing the critical fault lines and perennial bugbears in the field in their most controversial light. Beyond showing us the status quo, the coverage of the evolution in treaty practice and new policy initiatives makes this book a harbinger of the path to ISDS reform.' Brooks W. Daly, Deputy Secretary-General and Principal Legal Counsel, Permanent Court of Arbitration