Russia is testing nuclear weapons, and China is testing them too, you just don’t know about it,” Trump said in an interview that aired Sunday.

China is emerging as a fierce competitor to the US in the race to build small modular reactors and fusion that can help power data centers.

The world is entering an unmapped era of nuclear risk. The answer is not new explosive tests, but a coordinated campaign with allies to maximize deterrence while working to establish new norms against further expansion of nuclear weapons and managing the use of AI in decision-making systems.

Trump had ordered in late October testing of nuclear weapons in the United States, saying the U.S. could not fall behind Russia and China. Peskov said neither Russia nor China had resumed testing. "We all still have to get some sort of clarification from the American side because neither Russia nor China has resumed any nuclear tests,