Mayer Brown International LLP

Partner

Ambassador John J. Sullivan, former US deputy secretary of state and former US ambassador to the Russian Federation, is a partner in Mayer Brown’s Washington DC and New York offices and co-lead of the firm’s National Security practice. He is also a Distinguished Scholar at the School of Foreign Service of Georgetown University and a Distinguished Fellow at Columbia University. He serves as a Contributor to CBS News, is quoted frequently in international media as a leading authority on foreign affairs and has written an award-winning and critically acclaimed book on his experiences as ambassador, Midnight in Moscow, which was published by Little, Brown and Company in August 2024.