DONALD E. SEXTON, the principal of The Arrow Group, Ltd. is Professor of Business, Columbia University. Don received his Ph.D. from the University of Chicago and has been teaching for more than thirty years at Columbia in the areas of marketing, international business, and operations management. He has served as Faculty Director of all Columbia Business School Executive Programs in the areas of marketing, branding, and international strategy. A recipient of the Business School's Distinguished Teaching Award, he is a director or instructor in numerous programs for executives in Asia, Australia, Europe, Latin America, and the United States. Don served as a visiting professor at INSEAD for several years and has also taught at the Beijing Management Institute, the Shanghai University of Finance and Economics, the Australian Graduate School of Management, University of New South Wales, the University of Tehran, Jagiellonian University (Krakow), and the U.S. Business School in Prague.