The top U.S. admiral has called China’s shipbuilding capability “impressive” as Beijing moves ahead with a rapid buildup of ...

America’s sea-based nuclear deterrent is entering a dangerous squeeze. The Navy’s 12-boat Columbia-class program is slipping ...

For decades, Washington blocked Seoul’s desire for the attack submarines over concerns about nuclear proliferation. President Trump reversed that policy last month, but left key questions unresolved.

How South Korea puts submarines to use, and in partnership with the U.S. and Japan, “is yet to be seen,” Adm. Daryl Caudle ...