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Photo by: Ivan Sekretarev

** FILE ** U.S. President Barack Obama, front row center, smiles during a group photo of G-20 leaders outside of the Konstantin Palace in St. Petersburg, Russia on Friday, Sept. 6, 2013. Front row left to right, Mexico's President Enrique Pena Nieto, Brazil's President Dilma Rousseff and Indonesia's President Susilo Bambang Yudhoyono. (AP Photo/Ivan Sekretarev)

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