He is the director of the East Asia Nonproliferation Program at the James Martin Center for Nonproliferation Studies at the Middlebury Institute of International Studies at Monterey. He is also a non-resident affiliate at Stanford’s Center for Security and International Cooperation and a Contributing Editor to Survival. He specializes in arms control issues in Northeast Asia and his work on Chinese nuclear policy has been covered in The New York Times, The Wall Street Journal, and VICE. He received a Ph.D. in Policy Studies (International Security and Economic Policy), University of Maryland.

He leads the Innovation Cell in the Policy and Mediation Division of the UN Department of Political and Peacebuilding Affairs (UN DPPA), an interdisciplinary team dedicated to exploring, piloting, and scaling new technologies, tools, and practices in conflict prevention, mediation and peacebuilding.
He holds a Ph.D. in International Law and recently published the edited volume “Rethinking Peace Mediation: Challenges of Contemporary Peacemaking Practice” (Bristol University Press 2021).

He is the co-founder of Kopernik. Before starting Kopernik, He dealt with governance reform, peace building processes, monitoring and evaluation, and post-disaster reconstruction at the United Nations (UN) in Timor-Leste, Indonesia, Sierra Leone, the United States and Switzerland. Prior to joining the UN, He was a management consultant for McKinsey and Company in Tokyo. He holds an LLB from Kyoto University and MSc Comparative Politics from the London School of Economics and Political Science, and is a Guest Professor at Osaka School of International Public Policy, Osaka University.