Put all this another way, with a supposed 250km exclusion zone...

Put all this another way, with a supposed 250km exclusion zone for US and NATO troops from Russian territory, imagine if the situations were reversed. Now in Poland in a town called Powidz the US have the aviation combat brigade and the combat support regiment as well as reserves stationed there, it's about 265 ks as the crow flies from Russian territory. when the planes take off they would have to bank heavily not to cross that line. Now imagine if Russia were doing the same thing in Canada or Mexico and had warships cruising kms from Pearl Harbour or Dan Diego like the US do off Sevestapol and Kaliningrad, in international waters of course, would the US takes steps to deter that by maybe pushing troops to their borders, more likely they would have us at war already.
Let's try not get caught up with the US warmongering physcopaths and them beating their war drums, we should wait till the bad guys have weapons of mass destruction.
I've travelled a fair bit through these parts of the world and you have to understand the people a little, the Russians burnt Moscow to the ground so the French couldnt have it they are a little possessive of the motherland US and NATO might do well to remember Russia has been attacked twice in history, by the French and the Germans, the first one the war ended in Paris the other Berlin.