Russia, the U.S. and China remain the world's three largest countries in terms of the size of their nuclear arsenals.

North Korea has issued a warning to Japan over its upcoming test-fire of a prototype railgun. The futuristic weapon signals Japan is mulling a preemptive attack on the nuclear-armed country, state ...

She said: "The anxious and nervous psychology of the US, Japan ... wind down its nuclear and missile programs. Kim Yo-jong’s statement came a day after South Korea fired warning shots to ...

North Korean leader Kim Jong Un said his country’s launch this week of an intercontinental ballistic missile sends a warning that Pyongyang would respond with a nuclear attack if provoked by its ...