► Washington Declaration paved the way for what hitherto has been the US extended deterrence to morph into Korea-US extended deterrence.
► Through joint planning and training, and incorporation of Korea’s conventional weapons support for US nuclear operations, the Korea-US alliance would be able to strengthen deterrence capabilities to a level different from the past through the concretization of ‘Korean-style extended deterrence’ that Korea and the US would work together on.
► By implementing follow-up measures with the U.S., the Yoon administration must build on the new extended deterrence system that is concrete and substantial enough for the Korean people to realize the results of the Washington Declaration.