U.S. Fears Russia Might Put a Nuclear Weapon in Space American spy agencies are divided on whether Moscow would go so far, but the concern is urgent enough that Secretary of State Antony J. Blinken has asked China and India to try to talk Russia down.
A.I. Killer Drones Are Becoming Reality. Nations Disagree on Limits. Worried about the risks of robot warfare, some countries want new legal constraints, but the U.S. and other major powers are resistant.
The Urgent Need to Nuclear Talks with China After months of tense relations between the U.S. and China, there is a welcome sign of better communication.
Russia Pulled Out of a Nuclear Test Ban Treaty. Here’s What That Means. In de-ratifying the agreement, Moscow removed another brick in the wall of formal arms control intended to limit proliferation.