So your position is that others have behaved badly so now it is my turn? Sorry but I didn't buy that from my kids and I'm not buying it now.
No. My position is that self-defense (including collective self-defense) is not bad.
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We hold these truths to be self-evident, that all men are created equal, that they are endowed by their Creator with certain unalienable Rights, that among these are Life, Liberty and the pursuit of Happiness.--That to secure these rights, Governments are instituted among Men, deriving their just powers from the consent of the governed, --That whenever any Form of Government becomes destructive of these ends, it is the Right of the People to alter or to abolish it, and to institute new Government, laying its foundation on such principles and organizing its powers in such form, as to them shall seem most likely to effect their Safety and Happiness. Prudence, indeed, will dictate that Governments long established should not be changed for light and transient causes; and accordingly all experience hath shewn, that mankind are more disposed to suffer, while evils are sufferable, than to right themselves by abolishing the forms to which they are accustomed. But when a long train of abuses and usurpations, pursuing invariably the same Object evinces a design to reduce them under absolute Despotism, it is their right, it is their duty, to throw off such Government, and to provide new Guards for their future security.
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I think that is for the Ukrainians to decide, not you, not me, and not Russia.
Not only Ukrainians, but also for the Russian, Jews, Tatars, Hungarians, Poles and other people, who live there.
And we have right to support one of the sides or don't support any. And I think, that in this conflict, it's much more moral and pragmatical to support idea of equal rights for everyone, including Russians.