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and Russian President Dmitry Medvedev eat hamburgers during lunch at Ray's Hell Burger June 24, 2010 in Arlington, Virginia. Obama and Medvedev dodged the formality of a US-Russia summit Thursday, slipping out of the White House to visit one of the US leader's favorite burger joints.The two leaders will hold a joint press conference later June 24 at the White House. AFP PHOTO/Mandel NGAN (Photo credit should read MANDEL NGAN/AFP/Getty Images)

and Russian President Dmitry Medvedev eat hamburgers during lunch at Ray's Hell Burger June 24, 2010 in Arlington, Virginia. Obama and Medvedev dodged the formality of a US-Russia summit Thursday, slipping out of the White House to visit one of the US leader's favorite burger joints.The two leaders will hold a joint press conference later June 24 at the White House. AFP PHOTO/Mandel NGAN  (Photo credit should read MANDEL NGAN/AFP/Getty Images)