Or maybe they’ve been having a habit of overflying that chunk and Turkey was prepared to give them a serious message. Putin is an ass. And a liar. of course so’s Erdogan. If it’s a mid-east situation it’s almost always all bad guys.
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.