For the first time in years, the Kremlin has officially claimed to have tested one of its so-called "super weapons" — the nuclear-powered Burevestnik cruise missile — one of six “next-generation” ...

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.

Erin D. Dumbacher is the Stanton nuclear security senior fellow at the Council on Foreign Relations. The United States has the power and a process to respond when it is under nuclear attack, but only ...

President Trump and one of his top cabinet officials are sending mixed messages on how the U.S. government is handling the most destructive weapons in the world. By David E. Sanger and Zolan ...