Korea-Japan Relations: What to Expect? | The Capital Cable #115

June 16, 2025 • 9:30 – 10:15 am EDT

What to expect of Korea-Japan relations under the new South Korean government under President Lee Jae-myung? How will he work with Japanese Prime Minister Shigeru Ishiba as the two celebrate the 60th anniversary of normalization this month? 

Joining Mark Lippert and Victor Cha to discuss this and more are Christopher B. Johnstone from The Asia Group and Yuki Tatsumi from the Stimson Center.

Christopher B. Johnstone is Partner and Chair of the Defense & National Security Practice at The Asia Group, where he brings unparalleled expertise across Indo-Pacific markets including Japan, Taiwan, Australia, and Southeast Asia. Previously, Chris served as a Senior Advisor at TAG and concurrently as Senior Advisor and Japan Chair at the Center for Strategic and International Studies (CSIS). Chris served in government for 25 years in a variety of senior positions with a focus on U.S. alliances in the Indo-Pacific region. He served twice on the National Security Council, as Director for East Asia under President Biden (2021-2022) and Director for Japan and Oceanian Affairs under President Obama (2014–2016). In the Office of the Secretary of Defense, Chris led offices with responsibility for South and Southeast Asia (2017–2021) and East Asia (2016–2017). Prior to those roles, he served as Director for Northeast Asia (2010-2014), where he had principal responsibility for developing strategy for the U.S.-Japan and U.S.-South Korea alliances.

Yuki Tatsumi is a Senior Fellow and Co-Director of the East Asia Program and Director of the Japan Program at the Stimson Center. Before joining Stimson, Tatsumi worked as a research associate at the Center for Strategic and International Studies (CSIS) and as the special assistant for political affairs at the Embassy of Japan in Washington. In September 2006 Tatsumi testified before the House Committee on International Relations. She is a recipient of the 2009 Yasuhiro Nakasone Incentive Award. In 2012 she was awarded the Letter of Appreciation from the Ministry of National Policy of Japan for her contribution in advancing mutual understanding between the United States and Japan. A native of Tokyo, Tatsumi holds a B.A. in liberal arts from the International Christian University in Tokyo, Japan and an M.A. in international economics and Asian studies from the Paul H. Nitze School of Advanced International Studies (SAIS) at Johns Hopkins University in Washington.

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Contact Information

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yuki

Yuki Tatsumi

Senior Fellow and Co-Director of the East Asia Program and Director of the Japan Program, Stimson Center
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Victor Cha
President, Geopolitics and Foreign Policy Department and Korea Chair