serves not only as a collection of recently debated issues in investment law; it also deals with the underlying fundamental questions at the intersection of investment arbitration and international law. The book is the product of the 1 Bucerius Law Journal Conference on International Investment Law & Arbitration. It combines the current state of knowledge, new perspectives on the topic as well as practical issues and will be of interest to researchers, academics and practitioners in the fields of international investment law, international economic law, regulation and comparative law.