I have relatives in Slovakia. Never heard anything about NATO from them. Can you point out where are you finding that?
I suggest you ask your relatives how they feel about NATO encroaching further and further towards Russias' borders, and what do they think about the recent NATO exercise that flew armed nuclear missiles within 20km's of Russias borders. If the tables were turned, Americans would be having kittens - but somehow, Russians are supposed to take these threats lightly?
NATO is a defensive alliance. A country can join or leave NATO alliance. Nobody forces a country to join alliance. The higher threat RF creates for others, the more other countries are wanting to join an alliance to get protection from RF threats.
I highly suspect that your colleagues in Slovakia are invented.
NATO is the threat that Russia is responding to by buffering its borders and protecting its nuclear-armed naval base on Crimea. Its not Russia putting American bombs within strike distance - its the USA and its criminal NATO partners.