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U.S. President Barack Obama (L) and Cristina Fernandez de Kirchner, President of Argentina, leave following a Group of 20 nations family photo on day two of the G-20 summit in Pittsburgh, Pennsylvania on September 25, 2009. G-20 leaders are working on an accord to prevent a repeat of the worst global financial crisis since the Great Depression and ensure a sustained recovery. UPI/Andrew Harrer/Pool
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