Ukraine never was a threat to Russia. This is all about Putin’s ego.
Then, why do you or the powers that be think Ukrainians can win a war with Russia? You're just contradicted yourself.
Yes, an army of 600,000 well-funded and armed by NATO is most certainly a threat to any of its neighbors. If Russia or China was training and funding that kind of army in Mexico, do you think we'd tolerate it?
But, the reason Putin went in is because the Biden regime authorized an offensive in Donbass that was about to wipe out the ethnic Russian population there. And, never mind, there were 900,000 Russian citizens living there before the war started. Sounds like as good or better a reason for Russia to go into Ukraine than we had in the first Iraq war.
Putin can't save ethnic Russians but it was okay for us to save the people of Kuwait?