South Korea Approved to Build Nuclear-Powered Submarines in Landmark US Defense Deal

In 2025, the United States maintains the world's most powerful navy, noted for its advanced technology and global reach, while China is rapidly expanding its naval capabilities. President Donald Trump announced approval for South Korea to build nuclear-powered submarines, marking a significant shift in U.S. non-proliferation policy and elevating South Korea's strategic standing among U.S. allies. This decision allows South Korea to modernize its submarine fleet, transitioning from diesel-powered to nuclear-powered vessels, with construction planned at the Philadelphia shipyard owned by Hanwha Ocean. South Korea's nuclear submarine ambitions are driven by regional security concerns, particularly North Korea's advances in nuclear-powered submarines and missile technology. U.S. Defense Secretary Pete Hegseth's talks in South Korea highlight ongoing efforts to strengthen the military alliance amid evolving Asian security dynamics, including flexible deployment of U.S. troops and South Korea's increased defense investments. The development also impacts global defense markets, as South Korea's emerging nuclear propulsion technology could influence Canada's submarine procurement decisions.