Beijing, Moscow and shaken American allies are seeking new warheads as President Trump ends more than a half century of ...

It’s worth looking at high-assay low-enriched uranium, or HALEU, specifically. This fuel is enriched to higher concentrations ...

For more than five decades, the United States and Russia (and before it, the ...

President Donald Trump "will decide the path forward on nuclear arms control, which he will clarify on his own timeline," a White House official told Breaking Defense.

DUBAI, United Arab Emirates (AP) — Iran’s supreme leader warned Sunday that any attack by the United States would spark a ...

The last remaining nuclear arms control treaty between the United States and Russia is set to expire Thursday, leaving the ...

Watch as Ollie, his dad, Rev. Chris, and friends take on the Nuclear Fire Noodle Challenge, facing the extreme heat of ...

If the negotiations scheduled for Friday between Iran and the United States are to be effective and durable, they must move ...

The risks of this stand-off have been contained over the years by various arms-control agreements, most recently New START. But that treaty expired this week, with no replacement. To make matters more ...

U.S. Central Command says a U.S. Navy fighter jet shot down an Iranian drone that was approaching the aircraft carrier USS ...

Trump said that if Iran does not make a deal regarding its nuclear program, "we'll find out” whether Iran’s supreme leader was correct to predict that a U.S. attack on the country would spark a ...

Add Yahoo as a preferred source to see more of our stories on Google. Jeff Probst. (Photo illustration: Julia Meslener/Yahoo News; photos: CBS, Robert Voets/CBS/Getty Images) (Photo illustration: ...