This strikes me as the stupidest question a human being could ask – and, just possibly, also the last. Our enemy of the moment is loosing hell on us (if warning signals are accurate), so let’s do the same back at them. If we kill more of them than they kill of us, we win! Yes, human life – all life – will likely be destroyed in a nuclear war, but that’s just the way things work. That’s not our concern.