Rethinking the unthinkable: Ukraine reveals the need for nuclear disarmament

When the unthinkable becomes thinkable, it’s a crisis. And when the unthinkable actually happens, it is a catastrophe. Much effort will be spent on rebuilding what has been destroyed in Ukraine, and not nearly enough effort will be spent on rethinking our assumptions. Because we were wrong in our assessments of what is possible, we must change not only how we do business, but how we think about risks and rewards.