This revised edition of The History of ICSID details the history and development of the International Centre for Settlement of Investment Disputes (ICSID) and its constituent treaty, the Convention on the Settlement of Investment Disputes between States and Nationals of Other States. Antonio Parra, the first Deputy Secretary-General of ICSID, traces the immediate origins of the Convention, in the years 1955 to 1962, and gives a stage-by-stage narrative of the drafting of the Convention between 1962 and 1965. He recounts details of bringing the Convention into force in 1966 and the elaboration of the initial versions of the Regulations and Rules of ICSID adopted at the first meetings of its Administrative Council in 1967. The four periods 1968 to 1988, 1989 to 1999, 2000 to 2010, and 2011 to 2015 are covered in separate chapters which examine the expansion of the Centre's activities and changes made to the Regulations and Rules over the years. There are also overviews of the conciliation and arbitration cases submitted to ICSID in the respective periods, followed by discussions of selected cases and key issues within them. A concluding chapter discusses some of the broad themes and findings of the book, examines how ICSID might meet several large new challenges facing it, and outlines several possible further changes of its rules and procedures The book offers unique insight into the establishment and design of ICSID, as well as into how the institution evolved and its relationship with the World Bank over the 50 years since the establishment of ICSID. It is essential reading for those involved in this field.