Reuven S. Avi-Yonah, the Irwin I. Cohn Professor of Law and director of the International Tax LLM Program, specializes in corporate and international taxation. He has served as a consultant to the U.S. Department of the Treasury and the Organisation for Economic Co-operation and Development (OECD) on tax competition, and is a member of the steering group for OECD's International Network for Tax Research. He is also a trustee of the American Tax Policy Institute, a member of the American Law Institute, a fellow of the American Bar Foundation and the American College of Tax Counsel, and an international research fellow at Oxford University's Centre for Business Taxation. In addition to prior teaching appointments at Harvard University (law) and Boston College (history), he practiced law with Milbank, Tweed, Hadley & McCloy in New York; with Wachtell, Lipton, Rosen & Katz in New York; and with Ropes & Gray in Boston. After receiving his BA, summa cum laude, from Hebrew University, he earned three additional degrees from Harvard University: an AM in history, a PhD in history, and a JD, magna cum laude, from Harvard Law School. He has published more than 150 books and articles, including Advanced Introduction to International Tax (Elgar, 2015), Global Perspectives on Income Taxation Law (Oxford University Press, 2011), and International Tax as International Law (Cambridge University Press, 2007).