North Korea recently revealed it was building a nuclear-powered submarine for the first time. However, experts believe ...

The submarine could significantly escalate security concerns on the Korean peninsula and in the Taiwan Strait, experts say ...

A coalition of the world's biggest companies and largest energy users signed a pledge Wednesday in Houston to support a ...

North Korea has conducted a slew of underwater-launched ballistic missile tests since 2016, but all launches were made from ...

U.S. Energy Secretary Chris Wright said on Monday he was planning to work with Congress on cancelling previously mandated ...

U.S. National Security Council spokesman Brian Hughes said that “we’re aware of these claims and do not have additional ...

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North Korea fired several ballistic missiles into the sea after South Korean and U.S. troops began their large annual combined drills, Seoul said.

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 United States ...

North Korea has unveiled its first nuclear-powered submarine, marking a significant development in the country’s naval ...

Kim Jong Un was pictured on Saturday inspecting North Korea's first nuclear-powered submarine, which experts say poses a ...