And their government can do nothing in Europe without the consent of European governments.
1) Ukraine is not a member of the Eurozone
2) Ukraine is not a member of the Single Market (just like your little island now)
3) Ukraine is not a member of the Schengen Zone
4) Ukraine does not have to respect judgements from the European Court of Justice.
5) They are not subservient to your Common Agricultural, Common Trade, or Common Fisheries mandates.
6) Most importantly, Ukraine is not a part of your common security and foreign policy apparatus.
So, to what extent is Trump doing anything in Europe without Europe's consent?
You don't hear this European moaning when it concerns Belarus, or Georgia, or Armenia, or even Moldova.
So when it's convenient - Ukraine is Europe, and when it's not it's another former Warsaw Pact periphery.
If Europe really viewed Ukraine as belonging to the heartland, its actions and behavior would have been far different.