President Trump said on Thursday that the U.S. would begin testing nuclear weapons again for the first time in decades. Trump suggests the U.S. will resume testing nuclear weapons President Donald Trump appeared to suggest the U.S. will resume testing ...

The post-war international order may be tearing apart at the seams and international law is increasingly looking like a polite fiction, but we did just pass one notable milestone of global peace and stability: As of this month, the world has gone the longest time without a nuclear explosion since the atomic era began more than 80 years ago.

Yet January 14th marked the longest period humankind has gone without one or another part of the whole exploding one of these deadly weapons, stretching back to the last North Korean test in September, 2017. All other nuclear armed states conducted their last nuclear tests between 1990 and 1998 when Pakistan ceased its nuclear testing.

Discover the dramatic story behind the Tsar Bomba, the largest nuclear weapon ever detonated. This video explores its Cold War origins, Soviet nuclear strategy, and the events leading to its historic 1961 test over Novaya Zemlya.