The USS Nautilus was the world's first nuclear-powered submarine. It participated in scientific and military operations ...

A French nuclear-powered attack submarine left locals bewildered after it surfaced in an eastern Canadian province, just 300 ...

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 U.S. State media on Saturday ...

North Korea has unveiled a nuclear-powered submarine for the first time in photos released by state media, a weapon system ...

Kim Jong Un is aiming to increase North Korea's nuclear weapons capability as the U.S. remains cautious about the country's ...

North Korea has unveiled for the first time what it says is a nuclear-powered submarine under construction, a weapons system ...

North Korea has 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. On Saturday ...

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 ...