If Russian President Vladimir Putin’s premeditated, illegal attack on Ukrainian cities, towns, nuclear power stations, hospitals, and civilians wasn’t shocking enough, his recent nuclear saber-rattling is a crude reminder that the risk of nuclear war still looms. To respond effectively, those looking for a safer, saner world must rethink the nuclear deterrence policies and practices that have led the nuclear weapons countries to this point and push them toward new approaches and policies that move the world away from nuclear catastrophe.