A 4.3 magnitude quake in Fars province was confirmed natural by United States Geological Survey and Comprehensive Nuclear-Test-Ban Treaty Organization, dismissing nuclear test rumors amid debate over ...

After a 4.3 magnitude earthquake hit Khonj, speculation of a secret Iranian nuclear test erupted. We break down the seismic signatures, enrichment levels, and expert analysis to determine if Tehran ...

A U.S. official focusing on arms control has provided what he called new, declassified details of a Chinese underground ...

A US official says a seismic station in Kazakhstan collected evidence of an alleged China nuclear test at Lop Nur in June 2020.

The United States has revealed new details about a Chinese underground nuclear test that it claims happened nearly six years ...

Remarks by a top administration official appeared to be aimed at dispelling skepticism of its assertions, as President Donald ...

A US official has presented evidence of a secret Chinese nuclear test, raising tensions in global arms control discussions.

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

A small tremor rippled through a remote corner of Central Asia in June 2020. It registered at 2.75 on the seismic scale. The ...

In September 1979, a US Vela satellite detected a mysterious "double flash" over the Indian Ocean - a signal scientists ...

(AP) - North Korea says it has conducted a "higher level" nuclear warhead test explosion, one that will allow it to finally build an array of stronger, smaller and lighter nuclear weapons. It is ...