North Korea said on Saturday its nuclear weapons are not meant for negotiations but are intended for combat use against ...

North Korea said Saturday its nuclear weapons are not a bargaining chip, but designed for combat use against any attempts by ...

North Korea said Saturday its nuclear weapons are not a bargaining chip but designed for combat use against any attempts by ...

Drones have the potential to enhance nuclear deterrence, but they also introduce significant risks in terms of escalation control and first-strike stability.

Since the 1990s, the United States has used science to verify its nuclear weapons are working properly. NPR was granted a rare look at how they do it.