Korea submarine race

Where things stand

The topic still rests on a report by the Financial Times that North and South Korea are both pursuing nuclear-powered submarines, a capability neither navy has fielded. According to the Financial Times, the two efforts amount to a race, with Pyongyang and Seoul moving in parallel rather than in response to a single triggering event, and the paper reads the rivalry as a lasting shift in the naval balance in Northeast Asia, where boats able to stay submerged far longer than conventional ones would change what each side can threaten and what it must defend against. Beyond the existence of the competition and its strategic direction, there is still no detail on the state of either programme, and timelines, costs and technical progress on both sides remain unconfirmed. The latest development comes from Pyongyang's political messaging rather than from the shipyards. TASS reports that Kim Yo Jong, sister of Kim Jong Un, said North Korea's status as a nuclear state is enshrined in the constitution and cannot be changed by "a single document that has no legally binding force whatsoever", a statement that rejects external declarations as a basis for altering the country's nuclear posture. The remarks concern nuclear weapons status and not the submarine programme directly, and no source cited here links them to the vessels or to any negotiation. Taken together with the Financial Times account, they indicate that Pyongyang is closing off the diplomatic route to changing its nuclear standing while the naval competition described by the paper continues without publicly verified milestones.

Nuclear-powered submarines use a reactor for propulsion, which allows them to remain submerged for far longer and range further than diesel-electric boats; this is a propulsion capability and is distinct from whether a submarine carries nuclear weapons. Neither North nor South Korea has previously operated such a vessel, and both are now working to acquire one, according to the Financial Times. Because the Korean peninsula sits at the meeting point of several major navies, a change in what either Korean fleet can do carries weight well beyond the two countries. The Financial Times assesses that the competition signals a durable change in the naval balance in Northeast Asia rather than a short-term episode. Details of the two programmes, including their scale and schedule, are not established in the reporting available so far.