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NEW YORK, NY - SEPTEMBER 28: (AFP OUT) Russian President Vladimir Putin (L) and U.S. President Barack Obama shake hands for the cameras before the start of a bilateral meeting at the United Nations headquarters September 28, 2015 in New York City. Putin and Obama are in New York City to attend the 70th anniversary general assembly meetings. (Photo by Chip Somodevilla/Getty Images)

NEW YORK, NY - SEPTEMBER 28: (AFP OUT) Russian President Vladimir Putin (L) and U.S. President Barack Obama shake hands for the cameras before the start of a bilateral meeting at the United Nations headquarters September 28, 2015 in New York City. Putin and Obama are in New York City to attend the 70th anniversary general assembly meetings. (Photo by Chip Somodevilla/Getty Images)
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ANTALYA, TURKEY - NOVEMBER 15: (L-R) Indian Prime Minister Narendra Modi, Russian President Vladimir Putin and US President Barack Obama arrive for a family photo during the G20 Turkey Leaders Summit on November 15, 2015 in Antalya, Turkey. (Photo by Aykut Unlupinar/Anadolu Agency/Getty Images)

ANTALYA, TURKEY - NOVEMBER 15: (L-R) Indian Prime Minister Narendra Modi, Russian President Vladimir Putin and US President Barack Obama arrive for a family photo during the G20 Turkey Leaders Summit on November 15, 2015 in Antalya, Turkey. (Photo by Aykut Unlupinar/Anadolu Agency/Getty Images)
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