It should be interesting. I think the "Good Guys" are trying to make it look like they'll instantly destroy Putin's forces if he crosses the red line. Putin however, IMO, is thinking what the hell do I have to loose. I'm already on the outs so I might as well take this to the end whatever that may be. I'm in the right and it's my duty to finished this. So, Putin will cross the red line. The "Good Guys" will have an even bigger show of force, puff up their chests, and take away Putin's animal crackers.
But, I don't know him so maybe not. Either way, the "Good Guys" are not going to go full scale attack even after Putin starts to go full attack on others. It'll just be a very large series of precision missles hoped to stop his forces in their tracks. But, Putin, as he's facing death just my say, "Launch the big ones as many as you can." So, it'll be up to the leaders in charge under him if they will actually follow his orders or not. I think some will. But, most will not. Anybody in control of the nukes knows what they'll do. You almost have to be insane to actually launch one of those armed and ready to go. But, then there's always the destuct button before detenation, which would be a HUGE show of real force. That would make the "Good Guys" back off because I don't think they are insane.