Who created the Ukraine crisis?:
Muscovy's empire-building Tsars Peter, Catherine, Nicholas I and II, Alexanders II and III, Lenin, Trotsky, Stalin, Beria, Walter Duranty, Khrushchev, Brezhnev, Yeltsin, Putin, Medvedev, fascist philosophers Dugin and Ilya Ilin...This list could be much longer.
https://www.justsecurity.org/81789/russias-eliminationist-rhetoric-against-ukraine-a-collection/
Your use of Kiev instead of Kyiv and Konstantinople instead of Istanbul betrays your allegiance.
Clausewitz tells us that there will be lasting peace only with this political outcome:
The American empire will end and be replaced by the shared sovereignty EU model only after Russia's 19th century and China's 20th century empire models follow the Ottomans, Austro-Hungarians, Japanese, Brits, French, Italians, Belgians, Germans, Dutch into the dead empire cemetery first.
What Russia will or will not accept is as irrelevant to Ukrainian sovereignty and independence as:
* What Iran will or will not accept is to Israeli sovereignty and independence.
* What Japan or Germany would or would not accept in 1941.
* What the Confederacy would or would not accept from the Lincoln-led Union in 1861.
* What the British would or would not accept in 1776.
* What the Greeks would or would not accept from the Ottomans in 1829.