I don't know. The EU has been having a bit of a crisis, with candidates from several member states floating the idea of their own Brexits, financial struggles, and bad faith actors. I would hope that if Ukraine met the conditions for membership, then yes. It had been doing pretty well, financially and rule-of-law -wise; maybe not perfect, but steadily improving.

I was surprised by Trump, by Brexit, by the political successes of far-right politicians (Rachele Mussolonis) across Europe. I have no idea which way any of these countries will break.