To think that Putin isn’t the main danger to peace in the world at this moment is to be lost in a world of abstractions. Unless I have my facts wrong it is Putin’s army that invaded Ukraine and is killing Ukrainians. Millions have been forced to flee. Lives have been shattered, families separated, and a future has become bleak. And a few days ago, Russia was accused of committing war crimes.

As chilling, Putin more than once has alluded to his nuclear arsenal.