Every few years, it seems, one or another mismanaged eurozone country falls into one or another kind of crisis. This leads to speculation about the end of the common currency, which in turn spooks the global financial markets. Then the ECB conjures another trillion euros out of thin air and calm returns for a while. At least, that’s how it’s gone in the past. The latest crisis has more than the usual number of flash-points and could, therefore, be something new and different.