North Korea's unveiling of the Hwasong-20, an alleged nuclear-capable intercontinental ballistic missile (ICBM), has once ...

Researchers held a high-quality plasma steady for 43 seconds using frozen hydrogen, setting new fusion record.

For smaller powers, the Russia-Ukraine War’s lesson may be that their security will depend on nuclear deterrence.

In 1961, the Soviet Union tested the Tsar Bomba — a hydrogen bomb so powerful it shook the planet. With a 50-megaton yield, ...

The parade, held on Friday night, celebrated the 80th anniversary of the founding of the Workers' Party of Korea, following ...