After the dissolution of the SU, you had a friendly Russia and an expectations that NATO is going to disband especially since the Warsaw pact was a reaction to it. Why have NATO still? Who was the enemy? (No it's not a Defensive force and never was). The disbanding never happened. Even Putins Russia tried to join it 3-4 times. When you see former Warsaw pact members change regime and join NATO shortly afterwards you know what's up and what's coming for you. Invading Ukraine was preemptive and a reaction to NATO expansion. It's the causus belli. So yes you have it reversed. Even war hawks like Mearshheimer ane Kissinger are/were saying this