Russian press and politicians are more worked up over it than even the Ossetian deal.
Their argument goes like this — since Poland is getting air defense as part of the deal and it’s obvious that this is defense against Russians, then the whole move must be anti-Russian, blocking it’s response capabilities.
Russians are making noises about a response “outside of diplomacy” — I imagine some aggressive installation on the Russian side of the border — any hypotheses as to what it might be?