So Boerd said
You can't seriously believe that. Admittedly, it was a bigger concern back when the Soviets had overwhelming conventional force which we could not match. If those were the circumstances today, I would be willing to risk a Soviet retaliatory strike to prevent all Portugal to Helsinki falling under totalitarism. This is also why we must not only maintain nuclear superiority, but conventional superiority. I want the decision to begin the cataclysmic event or face an enormous military defeat to be Putin's, not Obama's. It takes very little relative resolve to stand up to China conventionally if they invaded Japan, but much more to risk nuclear. Also, this is why I support a Japanese nuclear arsenal.For example, Russia invades Estonia and threatens nuclear war if we resist. We should indubitably resist, and not paralytically fear the bomb. That step becomes much easier if Russia believes we are willing to pre-empt it if it starts to behave like it will go through with the threat.If we unilaterally went to a minimum deterrence posture, like naive idiots in the vein of Carl Sagan would suggest, we risk Putin calculating (likely correctly) that we won't risk resisting him because it means the death of nearly one of us.
The calculation you're talking about here is, 'Should I kill a few hundred million people to prevent a different flag from gaining territory.' Unless that nation is literally hitler, and even in most cases when it is -- that's not a good enough reason to nuke a goddamn country. But the flipside is, these are not 'totalitarian nations.' We characterize them that way because it is politically expedient to do so. Imagine a world where people who thought the USA was imperialist were therefore justified in nuking us. That is a dreadful fucking place.
In short I am an avid believer in furious, aggressive, precise and targeted intervention. Nukes do not fit the bill, in any but the most ludicrously outlandish scenarios. 'What if Russia invades ______?' Then we failed a thousand times to stop them from invading _____, and our failure does not justify the murder of millions of Russians.