That was the dire warning Thursday from the atomic scientists who run the metaphorical Doomsday Clock — and who have moved the hands 30 seconds closer to midnight, which represents the moment when the world could be annihilated by nuclear war.

“The world is not only more dangerous now than it was a year ago, it is as threatening as it has been since World War II,” Lawrence Krauss and Robert Rosner wrote in The Washington Post. “In fact, the Doomsday Clock is as…