Redbrickbear said:
Going on the offensive against Russia? Indeed. if we had done more then, helping Ukraine push Russia out of Donbas and Crimea, we might have avoided the war we have now.
"Nations do not wage war for war's sake, but in pursuance of policy. The military objective is only the means to a political end. Hence the military objective should be governed by the political objective … The objective in war is a better state of peace even if only from your own point of view. Hence it is essential to conduct war with constant regard to the peace you desire."
--Captain Sir Basil Liddell-Hart
Russia must end this war in substantially worse position than it began, or it will simply keep coming back for another bite. ALL of the gains from the 2022 invasion must be reversed and, ideally, one or both of Donbas and Crimea must be returned to Ukrainian control. If you don't punish the small infractions, bigger ones will happen.
This war is about political order, a defense of modernity itself. Do larger nations get to nibble off pieces of what they want in the shatter zone? They did pre-WWI. And it led directly to TWO world wars. The post WWII international order holds that the borders are the borders. If you don't maintain that principle, then it's back to pre-colonial scrambles for geography.