Ben S. Bernanke, chairman of the U.S. Federal Reserve, walks with Jean-Claude Trichet, president of the European Central Bank (ECB), left, outside the economic symposium sponsored by the Kansas City Federal Reserve Bank in Moran, Wyoming, U.S., on Friday, Aug. 26, 2011. Bernanke said the central bank still has tools to stimulate the economy without providing details or signaling when or whether policy makers might deploy them. Photographer: Daniel Acker/Bloomberg via Getty Images
