Europe responds very poorly to political and economic upheaval, which they seem to undergo near the start of each century. Germany was in shambles after WWI and so fomented the rise of National Socialism (which nearly conquered the world) and France after the French Revolution and the Reign of Terror gave rise to Emperor Napoleon (who nearly conquered all of Europe.) It looks like it might be Greece's turn to experience collective insanity.

The European Union will either become far more powerful as a central government, or it will collapse and even more chaos will follow.