Grand Illusion?

Tony Judt considers the question: How likely is a united Europe?
"I am enthusiastically European; no informed person could seriously wish to return to the embattled, mutually antagonistic circle of suspicious and introverted nations that was the European continent in the quite recent past. But it is one thing to think an outcome desirable, quite another to suppose it is possible. It is my contention that a truly united Europe is sufficiently unlikely for it to be unwise and self-defeating to insist upon it. I am thus, I suppose, a Euro-pessimist." —Tony Judt