What was once a contested body of principles applied peripherally to the international settlement of expropriation disputes has been transformed and in its place now stands an important area of international disputes practice. International Investment Law and Arbitration offers a comprehensive introduction to the subject. Presenting the facts of daily legal practice and the largely unaltered aims of the subject alongside a broad selection of key awards and original materials, historical developments are discussed in the context of the changing directions in the arbitral jurisprudence and current treaty and arbitration reform debate. Key features: Accessible and engaging commentary integrated throughout, end of chapter questions test reader understanding, further reading lists support and encourage exploration of the subject. Suitable for postgraduate law students studying modules on international investment arbitration, International Investment Law and Arbitration offers an indispensable introduction to the subject.