North Korea unveiled for the first time a nuclear-powered submarine under construction, a weapons system that can pose a major security threat to South Korea and the US. State media on Saturday ...

By Choe Sang-Hun Reporting from Seoul North Korea said on Saturday that it was building its first nuclear-powered submarine to enhance its nuclear weapons abilities, and the state news media ...

North Korea on Tuesday accused the United States of a "hostile military act" after a US Navy submarine docked in arch rival South Korea to replenish supplies. "We express grave concern over the U ...