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Pentagon Policy Chief Colby to Visit Seoul Next Week for Alliance Modernization Push

The trip reflects Washington's drive for greater allied defense contributions under its new national security strategy.

Undersecretary of Defense for Policy Elbridge Colby listens to the national anthem as he welcomes New Zealand Defense Minister Judith Collins at the Pentagon in Washington, D.C., U.S., October 20, 2025. REUTERS/Al Drago

Overview

  • Elbridge Colby is expected to make a three-day visit to Seoul through Tuesday as part of an Asia swing that also includes Japan, according to Yonhap citing unnamed sources.
  • Discussions are likely to focus on a potential increase in South Korea's defense spending and the conditions-based transfer of wartime operational control to Seoul.
  • South Korea's pursuit of nuclear-powered submarines is expected to be raised as a specific capability issue during the visit.
  • Colby is expected to emphasize trilateral security cooperation with Japan and brief counterparts on the recently released U.S. National Security Strategy.
  • Colby has publicly urged Asian allies to do more for their own defense, praising South Korea's move toward a higher spending benchmark, while formal trip details have not been officially confirmed.