Dr. Yi's main expertise is on Asian and Korean policies, but he is also well versed in U.S. foreign policy. He has been an Associate Professor of History and Political Science at Marietta College since 1989 and the director of Marietta College's East Asia Initiatives.
He has published a number of articles and commentary in magazines, newspapers and journals over his career. Dr. Yi is a guest political columnist for eight newspapers around the state of Ohio, including Zanesville Times Recorder, Lancaster Eagle-Gazette and The Marietta Times.
He is also a regular commentator on Radio Free Asia and the Voice of America. More recently he became a regular guest on a radio program throughout Europe and Asia. He has been invited as a guest commentator on BBC, Wall Street Journal, and Los Angeles Times on topics related to China.