Last year, President Donald Trump shocked many people when he instructed the government to resume nuclear testing “on an ...

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, ...

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

Trump wrote that he had instructed the Department of War to start testing nuclear weapons “on an equal basis” with China and Russia. But those instructions may have been sent to the wrong department.

President Trump's comments Thursday suggesting the United States will restart its testing of nuclear weapons upends decades of American policy in regards to the bomb, but come as Washington's rivals ...

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 ...

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

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

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 ha ...

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 ...

This is read by an automated voice. Please report any issues or inconsistencies here. Trump says U.S. will restart nuclear testing, reversing decades of policy since the last test in 1992. Russia, ...