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

The US tested a doomsday ballistic missile off the California coast Tuesday night — as war raged in the Middle East. The ...

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

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

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 ...

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 ...

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 ...

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 ...

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 ...