He previously taught at Ritsumeikan Asia Pacific University, including various field study programs in China, Korea and Taiwan. His current research focuses on critical security studies with reference to East Asia, theories and practices of international relations outside the West, and Sino-Japanese territorial disputes. Dr Chen has appeared in media such as Al Jazeera and NHK and published a series of peer-reviewed journal articles and book chapters. He is an editor of The North Korea Crisis and Regional Responses (Honolulu: East-West Center, 2015). He graduated from National Taiwan University and obtained his PhD in International Politics from Aberystwyth University, Wales.