the history may be complicated, and that's why it's up to the UN, or bilateral negotiation between russia and Ukraine, to resolve the issue, rather than russia using force and trying to genocide Ukraine because russia is mad they don't get everything they want

indeed, as soon as russia abandoned the former, diplomacy, and resorted to the latter, force, they lost all benefit of the doubt and all rights to anything they wanted

and that's to say nothing of the fact that russian soldiers rape, torture, and murder men, women, and children in areas of Ukraine they control, so ceding control means allowing that to happen, which obviously means it wouldn't actually lead to peace, because who would be peaceful sacrificing THEIR friends, family, and countrypeople to that? You?