Warren Buffett, chairman of Berkshire Hathaway Inc., left, speaks to David Rubenstein, co-founder and managing director of the Carlyle Group, during the Economic Club of Washington dinner event in Washington, D.C., U.S., on Tuesday, June 5, 2012. Buffett said he doesn’t expect another U.S. recession unless Europe’s crisis spreads. Photographer: Andrew Harrer/Bloomberg via Getty Images