Nuclear weapons are built as a last resort to deter the Russians yet they cannot engage in a full invasion without being decimated. Salami tactics are indeed the way Russia may be going, slowly taking Europe slice by slice if what has happened in recent years is anything to go by.
So lets look into a scenario:
>Riots in Poland, buildings in flames
>Firefighters from Kaliningrad Oblast cross the border to help
Would you press the button?
>Kaliningrad Police come with them
The button?
>Then some troops, more troops, 'just for riot control' they say
>Polish police leadership is crippled and Kaliningrad police chiefs take charge
Button?
>Then the Russian troops after the riots don't go, they have captured the hearts of the Polish and are asked to support civilian administration
>Civilian administration begins closing roads and Warsaw Chopin Airport
Now, you press the button?
So what is the last resort /pol/? When would you press the button?
Russia conquered Europe twice and both times packed up and went home, though the second time took 50 years. Fact is, it's Europe that keeps invading Russia.