A European perspective? When have you quoted any European sources? And from what I see here, European opinion is strongly on side with Ukraine, with the exception of Hungary, Bulgaria, Slovakia, and Cyprus.

https://www.europarl.europa.eu/at-your-service/files/be-heard/eurobarometer/2022/public-opinion-on-the-war-in-ukraine/en-public-opinion-on-the-war-against-Ukraine-20230720.pdf

Mearsheimer said this, yes? I told you you shouldn't listen to him, he's a jerk to say that! ;)