But it's a peace bought at the cost of thousands or millions of lives, and a fragile one resting on a foundation of lies and misunderstandings. I'm not so sure that's a better place.
Still better than all-out war. Was it based on a lie? Yes. But sometimes that's worth it. When it comes to the survival of the species, you can't dick around with morality. A handful of cities and a few million lives is a small price tag to avert a nuclear holocaust.
If you accept that insuring the survival of the species is more important than any individual's life, then why not just go whole-hog? Let the species experience the holocaust, and try to survive. Those who do survive, and their descendants, will have a
real foundation for making sure that such a thing can never happen again, as opposed to sitting on their house of cards and forgetting just why those pretty bombs shouldn't be used.
(Not that I agree in the slightest. But it seems to me like a more secure way of achieving your goals, if you're already willing to spill blood in the name of a better humanity.)