Youn Soo CHO received her Ph.D. in international relations from Tohoku University (2008) in Japan and served as a visiting researcher at Keio University in Japan (2016-2017). She has been researching at the Northeast Asian History Foundation since 2008. She specializes in Japanese politics and diplomacy, and international relations in East Asia, and her research has been focused on the empirical analysis of Korea-Japan relations and the diplomatic history of the two countries. In 2015, she led a project that put together the 50-year history of Korea-Japan relations in commemoration of the 50th anniversary of the normalization of relations between the two countries. Recently, CHO compiled diplomatic documents related to the Korea-Japan Talks and published them as a book. Her publications include HanIl gwangye ui gwejeok gwa yeoksainsik [The trajectory of Korea-Japan relations and historical perception] (co-authored, 2020) and HanIl hyeopjeong gwa HanIl gwangye: 1965nyeon cheje neun geukbok ganeung hanga? [The Korea-Japan Treaty and Korea-Japan relations: Can we overcome the 1965 system?] (co-authored, 2019), among others.