President Donald Trump issued a directive in October to conduct nuclear weapons tests.

WASHINGTON, March 24 (Reuters) - A senior State Department official on Tuesday said that the U.S. still is assessing how to implement President Donald Trump's order to resume U.S. nuclear weapons ...

Add Yahoo as a preferred source to see more of our stories on Google. The US said it has intelligence that China conducted banned nuclear explosive tests. The nuclear monitoring organization said it ...

A senior State Department official on Tuesday said the U.S. still is assessing how to implement President Donald Trump's ...

(CNN) — The United States on Friday accused China of carrying out a secret nuclear test in 2020 as the Trump administration calls for a broader nuclear weapons agreement including both China and ...

The B-52H Stratofortress is continuing the integration tests with the AGM-181 Long Range Stand Off (LRSO) missile, the Air ...

The United States is ready to carry out low-yield nuclear tests to match alleged secret explosions by China and Russia, ending a decades-old moratorium, a senior official said Tuesday. New START, the ...

Late last week, the U.S. leveled an explosive claim: China is planning secret nuclear weapons tests and has already conducted at least one. For the first time in decades, the U.S. and Russia have no ...

Discover the dramatic story behind the Tsar Bomba, the largest nuclear weapon ever detonated. This video explores its Cold ...