Russia's nuclear arsenal is likely unreliable, the Kremlin isn't known for keeping their gear in good shape. That changes if the US supplies nukes or expertise in one form or another. Putin is weak right now, and should be tackled before he can tag Krasnov into the ring. Either the EU deals with Putin now, or has to worry about a stronger Russia down the line.
There is no good answer, just the ones with a less terrible outcome.

I think that California and the Blue States will make good use of this, considering the shit that the Trump Regime has been pulling.