Ryo Sahashi is an Associate Professor of International Relations, Institute for Advanced Studies on Asia, at the University of Tokyo. Dr. Sahashi specializes in international politics in East Asia. His recent books are The US-China Rivalry: A Shift of American Strategy and Divided Worlds (Tokyo: Chuko, 2021), In a Search for Coexistence: the United States and Two Chinas during the Cold War (Tokyo: Keiso, 2015), and he edits East Asian Order in the Post-Cold War Era (Tokyo: Keiso, 2020). In English, he edits Looking for Leadership: The Dilemma of Political Leadership in Japan (Tokyo and New York: Japan Center for International Exchange, 2015), and his recent articles appeared in China International Strategy Review, Contemporary Politics, and Journal of Contemporary China. He serves as a Member of the Council on the Actual State of Land Use, the Advisory Panel on Science & Technology Diplomacy, and the Expert Panel on the 50th Year of Japan-ASEAN Friendship and Cooperation. He also works as a Faculty Fellow at the Research Institute of Economy, Trade, and Industry; a Visiting Fellow at the 21st Century Policy Institute, Keidanren; and a Research Fellow at the Japan Center for International Exchange. He received his B.A. from International Christian University and his Ph.D. from the Graduate Schools for Law and Politics at the University of Tokyo.