Russia doesn’t stand to gain anything from de-ratifying the Comprehensive Nuclear-Test-Ban Treaty, but friends and foes alike will reap the benefits of its decision.

The world has entered an era of interrelated nuclear competitions at the great power and regional levels.

The concept of strategic stability has come under immense pressure in recent years. Nuclear multipolarity, novel technologies, an exacerbating crisis in arms control, and a growing acceptance of “softer” norms are all taking a toll.

The resulting framework may look very different from arms control of the past. But it would be better than a future in which proliferation proceeds in the absence of any shared guardrails for handling the most dangerous weapons in the world.

A conversation about the state of nuclear nonproliferation today, against the backdrop of a proposed resumption of nuclear testing by North Korea and the implied threat of the use of tactical nuclear weapons by Russia in Ukraine.

China views U.S. missile defense as posing a greater potential threat to China’s nuclear deterrent than other U.S. military capabilities.