History would suggest that when sabres start getting rattled there are really only two options. Either one side recognises that it doesn't have the wherewithal to run with the big dogs, or it doesn't.
One can only hope that common sense prevails. Sadly, this seems to be one characteristic that is in short supply on both sides of this equation.
The Russians are telling the Americans to mind their own business. I hope they listen...sometimes it's better to simply let sleeping dogs lie. Iraq on a grander scale anyone?