Having been among the economic engines of Europe for much of the past decade, it appears as if the British economy has run out of steam. Inflation is rising while bankruptcies and unemployment continue to swell. It is a problem that would have left Lord Keynes' head spinning. In many ways, the responses of the U.S. and U.K. governments to the financial crisis have been very similar. So far, the American advantages in size and reserve currency status have allowed us to avoid the storm-clouds now descending upon Britain. But these advantages only provide a temporary respite. In the meantime,...