It will also take a total purge of the ECB's leadership, which clings to its madcap doctrine that monetary policy can be separated from other emergency operations, and which chose last week of all moments to raise interest rates again and kick Spain in the teeth. It did so knowing that the one-year Euribor rate used to price more than 90pc of Spanish mortgages must rise in lock-step. As one Spanish commentator put it, the Eurotower in Frankfurt should be torn down, and salt sown in the ground.