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

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 ...

Late last week, the U.S. leveled an explosive claim: China is planning secret nuclear weapons tests and has already conducted at least one. China denied the allegations, but experts are worried that ...

(CNN) — US intelligence agencies believe that China is developing a new generation of nuclear weapons and has conducted at least one covert explosive test in recent years as part of a broader push to ...

The United States is aware that China has conducted secret nuclear explosive tests, in violation of global commitments against testing, Washington’s top arms control official said on Friday. Beijing ...

China is "clearly" conducting explosive nuclear testing and "trying to hide it," National Nuclear Security Administration boss Brandon Williams told Axios at a Govini defense conference in Washington.

Late last week, the U.S. leveled an explosive claim: China is planning secret nuclear weapons tests and has already conducted at least one. The undersecretary of state for arms control and ...