Turkey has no standing as to where the Kurds are outside Turkey.
And it sounds like Turkey is starting a war of aggression outside their borders. So if they attack the Kurds, and Russia attacks them, Turkey cannot claim NATO mutual protection.
Turkey has already attacked the Kurds in Syria, several times.
They established the “Safe Zone” inside Syria by attacking the Kurds who were about to cut ISIS off from the Turkish Border after kobani.