Fears of a new arms race are growing as global tensions undermine hopes for progress on nonproliferation ...

The head of the organization overseeing a treaty banning nuclear testing is warning that if the United States, Russia or any other nation goes ahead with a test, other nations will follow.

Nov. 6 (UPI) --President Donald Trump's calls to ramp up nuclear weapons testing last week have put nuclear watchdogs and world leaders on alert while experts say the United States has little to gain.

The Minuteman III intercontinental ballistic missile will take flight from Vandenberg Space Force Base in California.

The State Department’s allegation that China conducted a yield-producing nuclear test in 2020 is reigniting debate in Washington over whether the United States can continue its decades-long moratorium ...

Trump ordered the Pentagon to restart nuclear testing for the first time since 1992, citing rival nations’ actions. Trump’s claim that the U.S. has the largest arsenal contradicts data showing Russia ...

Russian President Vladimir Putin on Wednesday ordered his top officials to draw up proposals for possibly resuming nuclear weapons tests, framing the move as a response to President Donald Trump’s ...

It might not have as reverent a name as the Trinity Test or a litany of films made about it. But Project Gnome, a 1961 explosive nuclear test conducted near Carlsbad, is a relic of a bygone era in New ...