The nuclear-powered USS Alexandria is a 360-foot fast-attack submarine equipped with Tomahawk missiles and MK48 torpedoes.

North Korea has accused the United States of carrying out a "hostile military act" after a US Navy submarine docked in a port ...

SEOUL, South Korea (AP) — North Korean leader Kim Jong Un has inspected a newly built submarine and ordered officials to further bolster the country's military capability, state media reported ...

Being submarine-capable is important as it means North Korea could launch missiles far outside its territory. According to South Korean officials, the missile flew about 450km (280 miles ...

SEOUL--North Korea has launched its first operational “tactical nuclear attack submarine” and assigned it to the fleet that patrols the waters between the Korean peninsula and Japan ...

Kim Jong Un attended the launch ceremony for North Korea’s first nuclear attack submarine, but Seoul says the North is exaggerating the sub’s capabilities.

SEOUL--The South Korean, U.S. and Japanese navies began their first anti-submarine drills in six months on Monday to boost their coordination against increasing North Korean missile threats, ...

North Korea has deployed its first operational “tactical nuclear attack submarine” with the fleet that patrols the waters between the Korean peninsula and Japan. North Korean leader Kim Jong Un, in a ...

North Korea’s state-run media lashed out at the United States on Tuesday over the arrival of a fast-attack submarine in South Korea’s largest port, calling it an “undeniable threat” and an effort to ...