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 ...

China is engaged in a huge nuclear weapons expansion, growing the size and capabilities of its arsenal. At a time when the ...

The expiration of the New START treaty has the US and Russia poised to increase the number of their deployed strategic ...

The United States is to resume nuclear weapons testing “immediately”, Donald Trump has announced, raising fears of renewed proliferation between the world’s two biggest stockpiles of atomic weaponry.

Aerial view of Hiroshima, Japan, after atomic bombing of August 6, 1945. Whether a nuclear weapon might again be used by one nation against another is a question that has haunted the world for nearly ...

Nuclear weapons tests were once a regular occurrence, but most countries haven’t tested in decades, following the adoption of the Comprehensive Nuclear-Test-Ban Treaty in 1996. Now, that moratorium ...