The US hasn’t got clean hands in this either. NATO was used to destroy Libya, and now it looks like zero is trying to use NATO to his own (and islams) ends again.
Putin hasn’t installed that defence system for no reason. It could be that he sees NATO as the potential enemy of Russia.
Don’t forget that NATO was used to tear Kosovo away from Serbia too.
EVERYBODY is a potential enemy for Putin, that’s how he rolls. This whole Syria adventure for him has nothing to do with fighting terrorism and everything to do with expanding territory and improving the flow of his oil. And he knows that even if the current administration are idiots and can’t see that, they’ve only got another year, and their replacements are mathematically guaranteed to be not as dumb.