The absence of a euro-dollar or a sterling-dollar currency crisis was one of the remarkable features of 2008. It was no accident. It was the swap lines that did the trick. What the Fed had done for money markets, the central banks now did for the global provision of dollar bank funding. They absorbed the currency mismatch of the European bank balance sheets directly onto their own accounts. Compensating public action ensured that private imbalances did not spill over into a general crisis.