Yong Shik Choo is the deputy chairman of the U.S.-Korea Institute at SAIS, and an assistant professor at the Graduate School of International Studies at Chung Ang University (CAU) in Seoul, South Korea. He is also the deputy director of CAU’s Institute for the Study of Grand Strategy. Dr. Choo is a former visiting researcher at the Korea Institute of Defense Analysis and a visiting scholar at the Yoido Institute. His expertise includes U.S.-ROK relations, Korea’s domestic politics, North Korea, and international relations in East Asia. Dr. Choo holds a B.A. in psychology from Seoul National University, an M.B.A. from the University of Colorado, and an M.A. and Ph.D. in international relations from SAIS.