South Korea confirms plan for nuclear-powered subs

Summary

Seoul confirmed plans for nuclear-powered submarines, a move with implications for its navy, U.S. ties, and regional security.

Why this matters

The project would mark a major shift in South Korea’s naval posture and defense industry, while testing how Seoul balances military modernization with nonproliferation commitments. It also reflects broader security concerns involving North Korea and the wider region.

South Korea’s Ministry of National Defense published a plan Tuesday to develop nuclear-powered submarines under the Jang Bogo N Project, a long-discussed effort that would expand the country’s naval capabilities and place it among a small group of nations operating such vessels.

The ministry said the submarines would offer “dramatically enhanced operational capabilities” over South Korea’s diesel-electric fleet, including effectively unlimited range and higher mobility. It said the boats “will play a core role in responding to threats such as North Korea’s submarine-launched nuclear and missile threats.”

South Korea has discussed nuclear-powered submarines since at least 2003, but the plan had faced opposition, including from the United States, over proliferation concerns. In October, President Donald Trump wrote on Truth Social that he had approved the plan, saying, “Our Military Alliance is stronger than ever before and, based on that, I have given them approval to build a Nuclear Powered Submarine, rather than the old fashioned, and far less nimble diesel powered submarines that they have now.”

Trump also said some boats would be built in the United States. South Korea’s ministry did not mention that possibility and emphasized domestic development, though the United States could still play a role in propulsion-related support. Last year, South Korea’s defense minister said the country would build its own submarines and modular reactors, while receiving enriched uranium fuel from the United States. The Defense Acquisition Program Administration said South Korea was already developing small nuclear reactors.

The fuel issue is significant because a bilateral agreement bars South Korea from enriching uranium or reprocessing spent fuel without U.S. approval. The announcement indicates Washington has approved the project.

  • Former Beaufort teacher faces child solicitation charge

    The exact allegations were not clear as of Tuesday afternoon.

    Full story +

  • N.C. approves $12M for volunteer fire departments

    In 2025, the agency awarded $11,985,224.84 to 485 fire departments statewide.

    Full story +

  • Palm Springs home prices fell, sales ticked up

    The median price for an average-sized detached home in Palm Springs fell nearly 15% from a year earlier.

    Full story +

  • Search continues for missing jet ski rider off Oahu

    Officials said Monday’s search was the third day of operations and would likely end at sundown unless there were new developments.

    Full story +

  • SC early voting surges as map bill stalls in Senate

    South Carolina set a first-day early voting record as many voters cited concern over a congressional redistricting bill that later stalled in the Senate.

    Full story +

  • North Korea fires missile, other weapons into sea

    Russia and China, both permanent members of the U.N. Security Council, have previously blocked U.S.-backed efforts to strengthen sanctions on North Korea over its prohibited weapons tests.

    Full story +

  • China, Taiwan coast guards face off near Dongsha

    Taiwan’s state-run Central News Agency reported Sunday that Taiwan’s coast guard had expelled Chinese vessels from waters around Dongsha six times this year.

    Full story +

  • South Korea confirms plan for nuclear-powered subs

    The ministry said construction could take up to 10 years. It did not provide a production timeline or say how many would be built.

    Full story +

  • Israeli strikes in eastern Lebanon kill 11, wound 15

    According to Lebanon’s Health Ministry, more than 3,100 people in Lebanon have been killed, more than 9,600 wounded, and at least 1 million displaced since the war began.

    Full story +

  • Iran restores some internet after months-long shutdown

    The shutdown left many Iranians cut off from international networks, with only a domestic intranet available for tasks such as shopping, ride-hailing, and education.

    Full story +