President Trump announced an agreement with South Korea to build a nuclear-powered submarine in Philadelphia. The announcement, made in a social media post, says it would be made at the Hanwha Philly Shipyard, which South Korea bought to boost its business with the U.S. Navy.

While Trump's green light for Korea to develop its own nuclear-powered submarine is a significant step forward for Korea, lots of future discussions and time will be required before Korea actually constructs and deploys a nuclear submarine.

According to a 2023 report from the then US Department of Defense, subsequently rebranded to the Department of War, China was planning to increase its submarine force to 80 units