Polish Prime Minister Mateusz Morawiecki calls it “World War III” — an initiation of hostilities by the European Union to which his government will respond by blocking all business in Brussels. Strong language, you might think. Then again, if World War I and World War II taught Poles anything, it was the value of national independence.

The dispute between the EU and Poland is about sovereignty, pure and simple. Can a country be in the EU and remain self-governing? Eurocrats say it cannot, and the signs are that they will get their way.