To guard against cyber attacks on the North American electric grid, three experts recommend forming an industry-supported organization like the one created by the nuclear industry after the Three Mile Island accident.

What the hijack of a truck carrying radioactive material says about nuclear security. 

Verifying nuclear disarmament requires more than verifying warhead dismantlement. Therefore, the research community should develop a set of tools suited to verify irreversible nuclear disarmament comprehensively. This set of tools will need to address both nuclear warheads and fissile materials.

Some say trying to use the Convention on Certain Conventional Weapons to pre-emptively ban lethal autonomous weapons systems has failed—and consequently should be abandoned. This argument is wrong.

From Harvard University's Belfer Center, this study of artificial intelligence and its likely security implications is an outstanding one-stop primer on the subject.

On March 31, Chinese President Xi Jinping will be among world leaders attending the fourth and last Nuclear Security Summit in Washington, D.C., where they will try to strengthen nuclear security to deal with the evolving threat of nuclear terrorism. Such efforts are badly needed, in light of the facts that there have been approximately … Continued

In 2014, Bulletin authors opined and analyzed not only from the United States, but from Russia, China, Iran, Ukraine—and even, it seems, Westeros, one of the continents in the hit HBO television series Game of Thrones.

You’re far more likely to die in an existential catastrophe than you think. And the risk of such a catastrophe is growing.

A former Army Ranger—who happens to have led the team that established Defense Department policy on autonomous weapons—explains in a Bulletin interview what these weapons are good for, what they’re bad at, and why banning them is going to be a very difficult challenge.

Should legal and regulatory norms be adjusted to address the threat of hyperintelligent autonomous weapons in the future? Maybe—but dumb autonomous weapons are altering norms right now.

The decision to restart the reactor at Sendai is probably based upon the “dismal science:” economics.