Keith Kellogg, U.S. President Donald Trump's special envoy for Ukraine and Russia, dismissed the possibility of Ukraine ...

A thousand feet beneath the desert, the United States conducts experiments to verify that its weapons work. But some fear a ...

As the world became more dangerous in 2024, the use of its most dangerous weapons has become more likely. More From Our ...

President Trump’s blueprints to build a space-based missile defense shield could help him push for reductions in atomic weapons arsenals across the great nuclear powers.

China is building a large-scale laser-ignited nuclear fusion research facility in Mianyang to enhance both nuclear weapons ...

China appears to be building a large laser-ignited fusion research centre in the southwestern city of Mianyang, experts at two analytical organisations say, a development that could aid nuclear ...