The U.S. Air Force launched a Minuteman III intercontinental ballistic missile from Vandenberg Space Force Base in California ...

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

The ongoing conflict between the US and Iran has raised suspicions about potential nuclear tests by the United States, despite official denials. Recent unusual seismic activity, including 16 tremors n ...

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

A Trump administration official said that a remote seismic station in Kazakhstan measured an “explosion” in western China on June 22, 2020. China denies conducting a test.

Does a video show a nuclear test carried out by the Islamic Revolutionary Guard Corps (IRGC) in Iran? No, that's not true: The video clip shows a nuclear test in the Nevada desert in 1957. The ...

Scientific knowledge about the damaging effects of nuclear-weapons testing helped to end such tests. Those findings haven’t changed.

While China is expanding its nuclear arsenal at a dramatic pace, Russia and the U.S. are also testing new delivery platforms.

VIENNA (AP) — The United States and Russia have both recently threatened to resume nuclear testing, alarming the international community and jeopardizing a global norm against such tests. Experts say ...

President Donald Trump’s calls to ramp up nuclear weapons testing last week have put nuclear watchdogs and world leaders on alert while experts say the United States has little to gain. Photo by Yuri ...

At a event in Washington D.C., A U.S. official said a remote earthquake in 2020 was caused by a Chinese nuclear test.