Social media-fueled theories of World War 3 have raised questions over what US states are safe should nuclear war happen.

President Donald Trump feared Iran's nuclear weapon capabilities. How safe would Pennsylvania and Delaware be during nuclear war or attack? See here.

The US military was spotted testing a new stealth nuclear weapon on a Cold War bomber last week — just as the Air Force was preparing to test its Minuteman III Intercontinental Ballistic Missile An ...

The allegations were leveled by U.S. officials late last week. Arms control experts worry that norms against nuclear testing are unraveling.

Add Yahoo as a preferred source to see more of our stories on Google. A subsurface atomic test near Yucca Flats, Nev., in March 1955. (U.S. Atomic Energy Commission via AP) (U.S. Atomic Energy ...

A nuclear escalation in the Middle East would trigger a global catastrophe. Know the physics behind nuclear weapons, and the ...

"We've halted many years ago, but with others doing testing I think it's appropriate to do so," the president told reporters aboard Air Force One. Experts say that the resumption of testing would be a ...

It is also home to U.S. tactical nuclear weapons under NATO’s nuclear-sharing arrangements. Formally, Ankara remains bound by ...