The United States has not tested a nuclear weapon since 1992.REF However, given the deteriorating security environment, it may need to do so once again.

Brandon Williams served aboard a nuclear submarine and represented a New York congressional district for one term, but has ...

We go inside Lawrence Livermore National Laboratory for a rare look at the El Capitan supercomputer, which is slated to begin ...

In his first term, President-elect Donald Trump signed a policy document that kick-started the Pentagon’s space nuclear reactor testing efforts. The updated policy transfers authority for ...

Argonne National Laboratory is developing Gen-IV nuclear reactors, including sodium-cooled fast reactors (SFRs).

Russia's point man for arms control cautioned Donald Trump's incoming administration against resuming nuclear testing, saying Moscow would keep its own options open.

Russia has warned Donald Trump not to resume testing nuclear weapons when he returns to office next year, adding it would 'not rule anything out' in response to perceived US aggression.

An outgoing Biden administration official overseeing nukes warned against a new arms race with Russia and China in her farewell address Thursday.