OK...so you prefer war. Got it.
We have no obligation to improve or maintain Russia's geopolitical interests.
None.
Russia, however, does have the obligation to not invade its neighbors. The reluctance of Russia's neighbors to do what Russia wants is not a legitimate justification for war. Case closed. End of story.
Our message to Putin if he doesn't like NATO expansion should be simply this: tough shit.
And if Putin is upset that countries like Ukraine want to form closer economic, political, legal, and military arrangements with other countries, maybe Putin should stop being asshole about everything and offer a better deal?
Apparently you read the words, but didn't care to understand them. Russia wouldn't "de facto" control them as the treaty specifically would be neutral, so you went with making shit up.
Has it occurred to you that these countries may not want to be neutral? And if Russia is the one deciding that these countries be neutral it's Russia that has a veto over the economic, political, military, and foreign policies of these various countries?
Face it, you don't care if war happens and you don't care about real diplomatic solutions.
What you describe as "real diplomatic solutions" is really nothing more than the appeasement of a dictator hell-bent on acquiring the territory of neighboring countries. And this doesn't stop with Ukraine just like it didn't stop Crimea. Putin will just keep pushing and pushing until he has rebuilt a system similar to what the Soviets had in place. We should work with Russia to resolve this situation, but Russia's current demands are totally unreasonable. I don't think we should surrender Ukraine to Putin's demands.
Peace on Russia's terms in this case means that we allow Ukraine to be conquered or controlled by Russia. Have you spoken when the Ukrainians about your plans to throw them to the wolves? Have you considered that maybe they don't want to be under Putin's thumb? Have you considered that maybe they want to maintain their territory and not give it up because Putin demands it?
You think to avoid war we should allow Ukraine to be conquered or controlled by Russia. But that does not sound reasonable to me.
What if Russia was trying to conquer or control our country? Would you advocate simply surrendering to Putin's demands?
Why would you ask that of the Ukrainians?