The Pentagon is drawing new authority lines along the border, keeping the C-17 fleet flying into the 2070s while pushing more ...

Risk of nuclear war is seen as being the closest it ever has been, due to weapons threats, emergence of AI, and climate crisis.

Within hours of New START lapsing last week, a senior State Department official complained of the pact’s “unacceptable” constraints.

Then, last week, the United States and Russia allowed New START, their last nuclear arms control treaty, to die. For the first time in 50 years, the two nations do not have limits on the size or ...

Warning at an appearance in Las Vegas that the world is “less safe” without a binding nuclear pact, two key House Democrats ...

The episode, if true, illustrates how ambiguity in one state's nuclear behaviour can reverberate across regions ...

It remains to be seen whether the three big nuclear powers are headed into a new arms race, or whether President Trump is ...

The administration’s top nuclear arms official formally accused China of conducting a secret underground tests in 2020.

Tammy Ma, director the Livermore Institute for Fusion Technology, can explain why her work with nuclear fusion is a step toward abundant clean energy.

Tires stick to hot asphalt as I drive the Stuart Highway from Alice Springs northward, leaving the MacDonnell Ranges behind.

North Korea will convene a major political conference later this month, the country’s state media said Sunday, where leader ...

Russian and U.S. negotiators discussed the expiration of the last remaining nuclear arms pact between the two countries and ...