What would be your impression if another country joined the conflict in Ukraine?

I mean by declaring war on one of the 2 countries?
1. War against Ukraine
2. War against the Russian invaders
3. National interests (territories, industries, resources, political situations).

An opposition for each preferred option Optional

What would be your impression if another country joined the conflict in Ukraine?
What would be your impression if another country joined the conflict in Ukraine?
What would be your impression if another country joined the conflict in Ukraine?
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