Nuclear weapons are not going to suddenly disappear. But they might create a more dangerous world in which countries are neither safely deterred nor meaningfully disarmed.

Experts warn that the expiration of a long-standing nuclear arms control treaty between the two superpowers could mark the start of a new nuclear rivalry.

Beijing, Moscow and shaken American allies are seeking new warheads as President Trump ends more than a half century of nuclear arms control with Russia.

Without the New START treaty, which caps the number of deployed nuclear warheads at 1,550 on each side, there will be no limits on the U.S. and Russian arsenals.

Nuclear weapons are often discussed in abstractions, as if they were just another line item in a defense budget or a bargaining chip in diplomacy. The brutal truth is that they are engineered instruments of mass extinction,

The post-war international order may be tearing apart at the seams and international law is increasingly looking like a polite fiction, but we did just pass one notable milestone of global peace and stability: As of this month, the world has gone the longest time without a nuclear explosion since the atomic era began more than 80 years ago.

The National Nuclear Security Administration (NNSA) is celebrating “a significant milestone,” announcing that it completed a record number of key element extractions integral to nuclear weapons testing and acceleration.