Steven Ratner's research addresses a range of public international law issues, including the normative orders concerning armed conflict, regulation of foreign investment, individual and corporate accountability for human rights violations, and the intersection of international law and global justice. He has served on two expert panels of the UN Secretary-General addressing post-conflict justice in Cambodia and in Sri Lanka and is a member of the U.S. Department of State Advisory Committee on International Law. The fifth edition of his casebook, International Law: Norms, Actors, Process (Kluwer Law, with Jeffrey Dunoff and Monica Hakimi), will be published next year.