Nuclear weapons haven’t been tested in the United States since 1992. Find out why, and what could happen if the hiatus ends.

President Donald Trump ordered the Department of War to resume testing nuclear weapons “on an equal basis” with Russia and China on Thursday, a practice halted by the U.S. in 1992. The announcement ...

In what would be a major shift in a decades-old American policy against global nuclear proliferation, President Trump says he has directed the Pentagon to “start testing” U.S. nuclear weapons “on an ...

US President Donald Trump made the announcement aboard Air Force One as he returned to the United States from Asia - Copyright AFP ANDREW CABALLERO-REYNOLDS US ...

President Donald Trump appeared to suggest the U.S. will resume testing nuclear weapons for the first time in three decades, saying it would be on an “equal basis” with Russia and China. There was no ...

Senate Democrats want to curb President Donald Trump’s ability to unilaterally resume nuclear testing, as the president suggested the U.S. would do on an "equal basis" with Russia and China moving ...

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 Defense Department wants troops to have new weapons quickly. But testing processes don't include the best ways to do that ...

Last week, Trump announced on social media that he had ordered the Department of Defense to immediately begin testing nuclear weapons, as Russia and China—the key nuclear rivals of the U.S.—have ...

The United States is "immediately" restarting nuclear weapons testing, President Donald Trump has said. "Because of other countries' testing programs, I have instructed the Department of War to start ...