Blackmail or not?

So Brussels will give an ultimatum to Poland and Hungary about the migrant quotas: accept them or leave the EU. The justification?

"They will have to make a choice: are they in the European system or not? You cannot blackmail the EU, unity has a price"


Ehm.

Isn't this blackmail? You can argue about accepting a Brussels mandate that was not exactly debated or decided upon democratically between member states, but you justify an ultimatum (aka blackmail) by saying you can't blackmail?

Woa.