A U.S. official focusing on arms control has provided what he called new, declassified details of a Chinese underground ...

The United States federal government is channeling billions of dollars into keeping existing nuclear plants running, restarting shuttered reactors, and clearing the regulatory path for advanced ...

A US official says a seismic station in Kazakhstan collected evidence of an alleged China nuclear test at Lop Nur in June ...

A US official has presented evidence of a secret Chinese nuclear test, raising tensions in global arms control discussions.

A Trump administration official said that a remote seismic station in Kazakhstan measured an “explosion” in western China on ...

US official Christopher Yeaw said 'Beijing is on track to have the fissile material necessary for more than 1,000 nuclear ...

The allegations were leveled by U.S. officials late last week. Arms control experts worry that norms against nuclear testing are unraveling.

CHINA has been accused of a massive nuclear expansion as well as carrying out secret tests, as the United States bids to ...

At the upcoming White House meeting, NNSA and DOE officials will be prepared to tell the administration that “there’s not going to be any testing” involving exploding nuclear materials and will seek ...

Resuming full testing of nuclear weapons — as President Donald Trump called for last week — would be unnecessary, costly, undermine nonproliferation efforts, and empower the nation’s adversaries to ...

From Trinity’s fallout to a New Mexico school underground, “Nuclear Family” traces how the bomb reshaped one family and a ...