Ukraine

Partially yes, as the EU has sanctioned Hungary, and also did some stuff to sanction Poland when the previous government went after the courts.

What makes stuff hard is that the EU is so fundamentally built on consensus that as long as a couple countries are backing each other it becomes functionally impossible to pass sanctions against them. Also, a single compromised country like Hungary can very easily become a big roadblock for the EU.

All this compromise is, by and large, what has made the EU so stable and robust. However it's also turning out to be an Achilles heel when you have bad-faith actors infiltrating the union.