> 1. Tactical nukes aren't a likely step for Russia if Ukraine takes back their territory - even if they go for Crimea. Russia knows that any use of nuclear weapons is crossing a line, and that the regime is done if they do so.

Is Putin not done politically if RU is defeated in UA, and Crimea is liberated / annexed?

> 2. There isn't a reason for spying on these facilities if the goal is to analyze the US' ability to launch a nuclear strike. That strike would come from a submarine sitting on the ocean floor off the coast near Moscow. And there's no real countermeasures for those missiles.

It's a good point. I suppose it depends on the nature of the conflict though. Maybe you're right, that in the event of an all out nuclear war there would be no point in trying to achieve a tactical advantage – but does either side really know the exact nature of the conflict well enough to make that assumption at this point? Perhaps both sides just know conflict is likely.