There is no logic because those are just words.I don't understand this logic that if Russia uses Nukes, then Nato enters the War. What is the logic behind it. Is the logic from Nato perspective, How dare Russia uses Nukes in Ukraine, so i am going to send my conventional troops into Ukraine so that they get hit by more Nukes? Or is the logic, I am going to nuke Russia in response?
They simply know that Russia does not plan to use nukes in Ukraine and therefore they can portrait this “macho” talking.
The only useful use of nukes in Ukraine would be precisely in the context of a NATO deployment, to destroy airfields in western Ukraine
In the current context nukes would not add nothing since Ukraine troops are scattered. Of course Russia could use a nuke to destroy let’s say Chasov Yar and speed their advance one month, but polluting the territory that they consider Russia and that is included in Russian constitution