In the 1970s, the Soviet Union built the K-278, an advanced nuclear-powered submarine designed to push the limits of technology. But during a patrol in 1989, disaster struck when a turbine failure led ...

In 1968, a Soviet submarine armed with nuclear missiles vanished beneath the Pacific Ocean. The Soviets searched in vain, ...

South Korea is joining a small circle of nations that operate nuclear-powered submarines. On Oct. 29 during his days-long trip to Asia, U.S. President Donald Trump announced following his meeting with ...

GYEONGJU, South Korea (AP) — The United States will share closely held technology to allow South Korea to build a nuclear-powered submarine, President Donald Trump said on social media Thursday after ...