Lee’s comments come after Joe Biden visited Japan and South Korea this past week, and amid public discussions in Seoul and Tokyo over the possibility of deploying US nuclear weapons in the respective countries.
Speaking at Nikkei’s Future of Asia conference on Thursday, Lee questioned if public discussions would contribute to an “arms race” in the region, amid a refocus on territorial defence capabilities following Russia’s invasion of Ukraine.
“In Japan and South Korea, sensitive issues are being raised publicly, including whether to allow nuclear weapons to be deployed on their soil, or even go a step further and build capabilities to develop such weapons,” Lee said.