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Trump greenlights building nuclear-powered submarine for South Korea

Soo-Hyang Choi / Bloomberg
Soo-Hyang Choi / Bloomberg • 2 min read
Trump greenlights building nuclear-powered submarine for South Korea
US President Donald Trump (left) with South Korean President Lee Jae Myung (right) during the APEC CEO Summit in Gyeongju, South Korea, on Wednesday, Oct 29, 2025.
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(Oct 30): US President Donald Trump approved plans for South Korea to build a nuclear-powered submarine at a US shipyard, about a day after Seoul pressed Washington to obtain nuclear fuel for submarines.

“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 said in a social media post Thursday.

The move comes as North Korean leader Kim Jong Un is stepping up his naval fighting force, building new destroyers that weapons experts have said incorporate Russian systems, and this week testing ship-to-surface cruise missiles.

South Korean President Lee Jae Myung made the request at a bilateral meeting in Gyeongju, South Korea, on the sidelines of the Asia-Pacific Economic Cooperation (Apec) summit. Lee said conventionally armed submarines would help his country better track North Korean and Chinese vessels, easing the operational burden on US forces.

Lee’s office later clarified that he was referring to submarines operating in South Korean waters facing North Korea and China, not to specific countries.

Trump said South Korea would be building the submarine in the Philadelphia shipyards, touting it as a boost for the US shipbuilding industry. The two countries finalised a trade deal after the leaders’ meeting, including a US$150 billion (RM629.6 billion) investment in the US shipbuilding sector.

See also: Chinese and Japanese leaders meet to talk rare earths, security

Read also:
US, South Korea finalise deal on investments, lower tariff rate

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