How is that relevant? Maybe it was because Ukraine is a nazi-fascist-baby-eating-puppy-kicking nation? It would make it even crazier for them to trust Russia not to attack them again, and even more important for Russia to build trust with others.

Surprised pikachu What? Ukraine did not trust Russia to not attack them again, after being attacked by Russia?

Russia has a trust-problem. If they are serious about wanting peace they should work on it.