Nobel economist Myron Scholes first floated the idea over lunch at a Riksbank forum in August. “I wonder whether Bernanke might not say that `we believe in a harmonized world, that the Europeans are our friends, and we know that the ECB can’t print money to buy bonds because the Germans won’t let them. And since the ECB will soon run out of money, we will step in and start buying European government bonds for them’. It is something to think about,” he said…

Berkeley’s Brad DeLong said it is time for Bernanke to act on this as the world lurches straight into 1931 and a Great Depression II. “The Federal Reserve needs to buy up every single European bond owned by every single American financial institution for cash,” he said.

The Fed could buy €2 trillion of EMU debt or more, intervening with crushing power. The credible threat of such action by the world’s paramount monetary force might alone bring Italian and Spanish yields back down below 5pc, before one bent nickel is even spent.

One presumes that the Fed would purchase both the triple AAA core and Club Med in a symmetric blast of monetary stimulus across the board, avoiding the (fiscal) error of targeting semi-solvent states. In sense, the Fed would do quantitative easing for the Europeans, whether they liked it or not.