Days after Donald Trump took the oath of office, the Bulletin of the Atomic Scientists reset the Doomsday Clock to 2½ minutes to midnight, in part because of destabilizing comments and threats from America’s new commander in chief. One year later, we are moving the clock forward again by 30 seconds, due to the failure of President Trump and other world leaders to deal with looming threats of nuclear war and climate change.

The Science and Security Board for the Bulletin of the Atomic Scientists assesses that 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. In fact, the Doomsday Clock is as close to midnight today as it was in 1953, when Cold War fears perhaps reached their highest levels.

To call the world nuclear situation dire is to understate the danger — and its immediacy. North Korea’s nuclear weapons program appeared to make remarkable progress in 2017, increasing risks for itself, other countries in the region and the United States.