What was the reason for revolution?
EU and NATO membership
Russia will never accept Ukraine nation backed by western great powers
NATO membership wasn't idea back in the day, whole thing was about association agreement with EU.
Ukraine itself has potential to become regional great power. That's, I think, is one of the reasons why military aid is given only for Ukraine not to lose, not enough for the fast win. As militarily Ukraine already could beat Germany, for example (they destroyed more Russian tanks in the first week of full scale Russian invasion than German army has in working condition).
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Ukraine is too poor and corrupt to become a great regional power
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