In a major geopolitical development, former U.S. President Donald Trump announced that he has authorized South Korea to build a nuclear-powered submarine, granting the nation access to one of the world’s most advanced military technologies.
The decision, revealed on social media Thursday morning in South Korea, came as Trump attended the Asia-Pacific Economic Cooperation (APEC) summit. The announcement followed a productive day in which Trump also secured a new trade deal with the host nation and received a replica gold crown as a diplomatic gift.
A Landmark Defense Decision
If implemented, this move would mark the first time the United States has extended such advanced nuclear naval technology to South Korea. Only a handful of countries — including the U.S., the U.K., France, Russia, China, and India — currently operate nuclear-powered submarines.
By authorizing South Korea to pursue this capability, Trump signaled a significant shift in Washington’s defense cooperation with Seoul, potentially reshaping power dynamics in the Asia-Pacific region.
Analysts say this decision could serve as both a deterrent to regional threats and a message of strengthened U.S.–South Korea alliance, particularly amid rising military tensions involving North Korea and China.
Background and Strategic Context
The move aligns with broader efforts to bolster South Korea’s defense autonomy while reinforcing its alliance with the United States. It also comes as regional powers continue to modernize their naval forces, with submarine capabilities seen as a crucial element of deterrence and intelligence operations.
While details of the authorization remain limited, experts note that nuclear-powered submarines provide major strategic advantages — including longer underwater endurance, faster travel, and enhanced stealth compared to conventional diesel-electric vessels.
However, the announcement is likely to trigger debate among defense and nonproliferation experts, as it involves sensitive nuclear propulsion technology that is rarely shared even among close allies.
Diplomatic Symbolism
Trump’s announcement was made alongside ceremonial gestures that reflected warm bilateral relations. During his visit, South Korean officials presented him with a replica of an ancient gold crown, symbolizing friendship and prosperity between the two nations.
As discussions around the South Korea nuclear submarine authorization unfold, both countries are expected to engage in technical and diplomatic consultations to assess the feasibility and long-term implications of the project.
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