The third edition of this acclaimed scholarly book offers an up-to-date, critical overview of the law of foreign investment, incorporating a thorough and succinct analysis of the principles and standards of treatment available to foreign investors in international law. It is authoritative and multilayered, offering an analysis of the key issues and an insightful assessment of recent trends in the case law, from both developed and developing country perspectives. A major feature of the book is that it deals with the tension between the law of foreign investment and other competing principles of international law. In doing so, it proposes ways of achieving a balance berween these principles and the need to protect the legitimate rights and expectations of foreign investors on the one hand, and the need not to restrict unduly the right of host governments to implement their public policy, including the protection of the environment and human rights, and the promotion of social and economic justice within the host country, on the other.