““cheer Russian domination of Europe.”
They are not able to dominate Europe. That’s a red herring.
However, I would most certainly cheer loudly at their eradication of the pseudo state of Ukraine.
That way the world can get back to normal business.
The world will not be able to get back to its business after Ukraine is conquered the world will be a far more dangerous place and Russia and China will be far more aggressive.
You want to bury your head in the sand that’s your decision but we all have to suffer the consequences.