Russia, the United States and China have all built new facilities and dug new tunnels at their nuclear test sites in recent years, satellite images obtained exclusively by CNN show, at a time when tensions between the three major nuclear powers have risen to their highest in decades.
“Russia’s thinly veiled threats to use nuclear weapons remind the world that escalation of the conflict – by accident, intention, or miscalculation – is a terrible risk. The possibility that the conflict could spin out of anyone’s control remains high,” the group said.
In other words, the Doomsday Clock today signals a higher risk of the end of humankind than in 1953, when both the United States and the Soviet Union conducted dramatic above-ground tests of nuclear weapons.