The Doomsday Clock now stands at 89 seconds to midnight, the closest to catastrophe in its nearly eight-decade history.

Reflecting on these life-and-death issues and starting a dialogue are the first steps to turning back the Clock and moving away from midnight,” he added in a statement.

"That's a conversation that should have warranted a much longer dialogue than what we had ... the push through of the change to the pitch clock still happened." As part of the new rules package ...