'Doomsday Clock' ticks 30 seconds closer to midnight's apocalyptic destruction

The world is as close to ultimate doom as it has ever been, group says.

The Chicago-based nonprofit announced today the decision to advance its Doomsday Clock closer to midnight by 30 seconds. The clock is now two minutes to midnight, the symbolic hour of imminent doom.

"This is the closest the clock has ever been to Doomsday, and as close as it was in 1953, at the height of the Cold War," Rachel Bronson, president and CEO of the Bulletin of the Atomic Scientists, said at a news conference today.

"To call the world's nuclear situation dire is to understate the danger and its immediacy," she added.

"We considered at length the lack of predictability in how the United States is thinking about the future and future use of its own nuclear weapons," she said. "An unpredictability that is embodied in statements and tweets by the president of the United States."