The Russians bark about their nukes. Ptown has posted several times about the massive amount of nukes the Russians have. It takes three nukes to knock out Russia today. St. Petersburg, Moscow, and Volgograd. They will not ever pull the nuclear trigger until that geography changes. I grew up during the cold war when Russia was in control of all of eastern Europe and large parts of Asia. They want it all back so can have back that power.
Thing is the Russians are sending their minorities and idiots from their far east to be butchered in an effort to overwhelm the front. When the areas around the three Russian cities I mention experience war and I mean their children in mass sent to the front things change.