This past week, the U.S. dismantled the last of its largest nuclear bombs, the B53.
This was a Dr. Strangelove bomb, conjuring up images of armageddon and apocalypse. At the same time, one of the smallest warheads was also removed from the nuclear arsenal.
These are steps the U.S. is taking apart from its arms control agreements with Russia. And thousands more American nuclear weapons are slated for destruction in a process that could take a decade or more.