U.S. President Barack Obama (R) listens after announcing his nomination of Federal Reserve Chairman Ben Bernanke to a second term, in Oak Bluffs, Massachusetts, in this August 25, 2009 file photo. The combination of the financial nervous breakdown and the uneven economic recovery has turned central bankers into the equivalent of military generals waging a war. The question is whether, in the face of political opposition, they will deploy the weapons at their disposal. Picture taken August 25, 2009. To match Special Report DAVOS/ECONOMY. Reuters Pictures logo Reuters Pictures 24 months ago

U.S. President Barack Obama (R) listens after announcing his nomination of Federal Reserve Chairman Ben Bernanke to a second term, in Oak Bluffs, Massachusetts, in this August 25, 2009 file photo. The combination of the financial nervous breakdown and the uneven economic recovery has turned central bankers into the equivalent of military generals waging a war. The question is whether, in the face of political opposition, they will deploy the weapons at their disposal. Picture taken August 25, 2009. To match Special Report DAVOS/ECONOMY.