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

The United States accused China of carrying out secret nuclear explosive tests in breach of an international ban.

The US accused China of secret nuclear tests, banned under international agreement, that were building toward tests of larger ...

"I can reveal that the U.S. government is aware that China has conducted nuclear explosive tests, including preparing for ...

A US official claimed that China used the "decoupling" technique to reduce the effectiveness of seismic monitoring and hide its activities from the world ...

Late last week, Israel targeted three of Iran's key nuclear facilities—Natanz, Isfahan and Fordow, killing several Iranian nuclear scientists. The facilities are heavily fortified and largely ...

A recently declassified document from nearly 50 years ago provides an important piece of the puzzle for open-source researchers seeking to understand the murky origins of the International Atomic ...

Since the successive Israeli and US air strikes on Iran’s nuclear sites in June, much of the fevered and highly politicized public debate has focused on whether the attacks have “obliterated” Tehran’s ...

Washington on Friday accused China of conducting secret nuclear explosive tests, and of preparing for more tests with massive yields.