For the first time in more than half a century, there are no binding restraints on the buildup of the largest nuclear forces ...

Add Yahoo as a preferred source to see more of our stories on Google. Russia's Yars intercontinental ballistic missile system unit drives in Red Square during a military parade on Victory Day, marking ...

Deterring Russia, collecting motherly advice and sending postmortem postcards, through readers’ eyes.

Separated by an ocean and more than a decade, innovative experiments with 31 tin isotopes having either a surplus or shortage ...

The world has entered its most dangerous nuclear phase since the Cold War. With the expiration of the New START treaty, the ...

Since the end of the Cold War, a new nuclear order has emerged, shaped by rising nuclear states and military technologies that threaten stability, writes George Mason University’s Gregory Koblentz in ...

President Trump said on Thursday that the U.S. would begin testing nuclear weapons again for the first time in decades. “We’ve halted many years ago, but with others doing testing I think it’s ...