What would it really take to save Europe's single currency? The answer, almost surely, would have to involve both large purchases of government bonds by the central bank, and a declared willingness by that central bank to accept a somewhat higher rate of inflation. Even with these policies, much of Europe would face the prospect of years of very high unemployment. But at least there would be a visible route to recovery.
Yet it's really, really hard to see how such a policy shift could come about.
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