Depends. Is he actually fighting 450,000,000 in the EU? Is Portugal going to send troops to the front lines in Estonia? Will Germans accept being drafted to go fight in Ukraine? These are serious questions. Meanwhile Putin is very much able to draft Russians to fight wars, and god-forbid he takes over Ukraine he'll send Ukrainians too.
>"Will Germans accept being drafted to go fight in Ukraine"
Ukraine is not in EU. As for the rest - if they don't then, well, they were just hiding behind the US with all the consequences.