Kim Jong Un oversaw a new solid-fuel rocket engine test, state media reports, as North Korea pushes to upgrade its long-range ...

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

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 ...

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 ...

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

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

States may be tempted to pursue their own nuclear weapons as they seek deterrence against attacks amid uncertainty over US guarantees.

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 ...

The US said it has intelligence that China conducted banned nuclear explosive tests. The nuclear monitoring organization said it hadn't detected activity related to an explosive test. China is ...

Nuclear weapons testing has affected every single human on the planet, causing at least four million premature deaths from cancer and other diseases over time, according to a new report delving into ...

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 ...