South Korea received U.S. approval to build a nuclear-powered attack submarine that can operate for months underwater, track ...

Japan's Defense Ministry said the country faces "the most severe and complex security environment" since World War II.

Trump said the country would build its nuclear-powered submarine in the Philly Shipyard, which was bought last year by South ...

In 2019, a bizarre and brightly-yellow submarine, bearing an uncanny resemblance to North Korea's deadly "Shark"-class ...

Donald Trump has said he has given South Korea permission to build nuclear-powered submarines in Philadelphia, in an ...

South Korean President Lee Jae-myung has asked US President Donald Trump for approval to acquire nuclear-powered submarines ...

Experts call it "21st-century gunboat diplomacy" as U.S. positions strike-capable forces in Caribbean amid tensions with ...

China's been steadily upgrading its submarine fleet and weapons to detect those of the US should the two nations go to war.

WASHINGTON -- WASHINGTON (AP) — The U.S. military has built up an unusually large force in the Caribbean Sea and the waters ...