The security architecture dissuading countries from growing and pursuing their own nuclear weapons is collapsing.

Ahead of U.S. strikes on Iran, one U.S. intel assessment concluded Iran could build a nuclear weapon in months but didn't ...

IAEA chief Rafael Grossi confirms Iran has nuclear material but says he is not seeing "any tangible proof that there's a ...

We asked three experts on Iran’s nuclear program what Trump achieved with his strikes. Their answers were concerning - ...

“Certainly, North Korea doesn’t rue the day it acquired nuclear weapons,” said Christopher R. Hill, who led lengthy, ...

Deadlier weapons, more nations, autocrats in charge, disinformation and collapsing arms control — the risk of nuclear ...

As the world waits to see if the US joins Israel in its war with Iran, the latest evidence from the ground suggests they ...

Israel's airstrikes on Tehran escalate tensions as Israeli sources claim Iran was assembling a nuclear device, while others maintain Iran has not reauthorized its weapons program.