The International Centre for Settlement of Investment Disputes (ICSID) is the premier international investment arbitration facility in the world. In its half-century of existence ICSID has administered more than 525 cases with parties, counsel, arbitrators, and conciliators from virtually every country in the world. Collectively, ICSID jurisprudence has defined international investment law. This volume celebrates the first 50 years of ICSID by presenting the landmark cases that have been decided under its auspices. These cases have addressed every aspect of investment disputes: jurisdictional thresholds; the substantive obligations found in investment treaties, contracts, and legislation; questions of general international law; and a number of novel procedural issues. Each chapter, written by a knowledgeable expert on the chapter's particular focus, looks at an international investment law topic through the lens of one or more of these leading cases, analysing what the case held, how it has been applied, and its overall significance to the development of international investment law. --