Kei Koga is Associate Professor at the Public Policy and Global Affairs Programme, School of Social Sciences, Nanyang Technological University (NTU). Concurrently, he is a Nonresident Fellow at The National Bureau of Asia Research (NBR), the United States, and a member of RIPS Research Committee, the Research Institute for Peace and Security (RIPS), Japan. His research focuses on International Security, International/Regional Institutions (particularly ASEAN), and East Asian/Indo-Pacific security.

Previously, he was Japan Scholar at the Wilson Center in 2022; visiting fellow at Center for Strategic and International Studies (CSIS) in 2017; a Japan-U.S. Partnership Fellow at the Research Institute for Peace and Security (RIPS), Tokyo, in 2012-2014; Postdoctoral Fellow in the International Studies Program, The Belfer Center for Science and International Affairs, Harvard Kennedy School, in 2012-2013; a Vasey Fellow at the Pacific Forum CSIS in 2009–2010; and RSIS-MacArthur visiting associate fellow at S. Rajaratnam School of International Studies (RSIS), NTU in 2010. He received his Ph.D. in International Relations at the Fletcher School of Law and Diplomacy, Tufts University.

He has published on topics that include East Asian/Indo-Pacific security, U.S. and Japanese foreign policies, the U.S.-Japan alliance, and ASEAN. His recent publications include:

Books:
"Managing Great Power Politics: ASEAN, Institutional Strategy, and the South China Sea" (Palgrave Macmillan, 2022);

Journals:
"Tactical hedging as coalition-building signal: The evolution of Quad and AUKUS in the Indo-Pacific" (British Journal of Politics and International Relations, 2024);

"Institutional Dilemma: Quad and ASEAN in the Indo-Pacific" (Asian Perspective, 2023);

“Struggle for Coalition-Building: Japan, South Korea, and the Indo-Pacific” (Asian Politics & Policy, 2023) ;

"Getting ASEAN Right in US Indo-Pacific Strategy" (Washington Quarterly, 2022);

"A New Strategic Minilateralism in the Indo-Pacific" (Asia Policy, 2022);

「ASEANアーキテクチャにおける『信頼醸成』」 (“Confidence Building” in ASEAN Architecture) 『国際安全保障』(“Journal of International Security” by Japan Association for International Security, 2022);

“Japan’s Strategic Approach toward Island States: Case of the Pacific Islands” (Journal of Indo-Pacific Affairs, 2022);

"Conceptualizaing equidistant diplomacy in international relations: the case of Singapore" (International Relations of the Asia-Pacific, 2022) [With Teo Ang Guan];

“Emerging Powerplay in the Mekong Subregion: A Japanese Perspective” (Asia Policy, 2022);

“Quad 3.0: Japan, Indo-Pacific, and Minilateralism” (East Asian Policy, 2022);

“How strategic is “asymmetric” strategic partnership? Japan’s partnership diplomacy toward Cambodia and Laos” (Asian Security, 2022);

His current book project is "Japan’s Grand Strategy: Power and Challenge of Liminal Power" (under the contract of Oxford University Press) [With Saori Katada]