An interesting question is...What would the NATO do if Trump started lobbing missiles at Canada to help him live out his annexation fantasies? Would the EU launch a massive salvation armada? Doubtful because if you read the text to Article 5 then they could get away with popping a few slingshots and a flashlight in the mail and calling it a job done.Trump on NATO: "If the United States was in trouble and we called them. We said, 'We got a problem, France.' Do you think they're gonna come and protect us? Hmm. They're supposed to. I'm not so sure."
If the EU was really concerned about Ukraine, they's dump all this talk about admitting Ukraine to NATO and fast track Ukranian EU membership because article 42(7) has way more teeth and the forces of the EU should be able to drive the ill equipped, undermanned Russians back to the border in a weekend.