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)
MOSCOW, RUSSIA - DECEMBER 28, 2016: Russia's President Vladimir Putin (C) chairs a meeting of the Russian Security Council at the Moscow Kremlin. Mikhail Klimentyev/Russian Presidential Press and Information Office/TASS (Photo by Mikhail Klimentyev\TASS via Getty Images)
Russian President Vladimir Putin (L) meets with US President Barack Obama on the sidelines of the UN conference on climate change - COP21, on November 30, 2015 at Le Bourget, on the outskirts of the French capital Paris. AFP PHOTO / SPUTNIK / MIKHAIL KLIMENTYEV / AFP / SPUTNIK / MIKHAIL KLIMENTYEV (Photo credit should read MIKHAIL KLIMENTYEV/AFP/Getty Images)
NEW YORK, NY - SEPTEMBER 28: (AFP OUT) (L-R) U.S. President Barack Obama, United Nations Secretary-General Ban Ki-moon and Russian President Vladimir Putin sit together during a luncheon hosted by Ki-moon during the 70th annual UN General Assembly at the UN headquarters September 28, 2015 in New York City. Obama held a bilateral meeting with Indian Prime Minister Narendra Modi and with have a face-to-face meeting with Russian President Vladimir Putin later in the day. (Photo by Chip Somodevilla/Getty Images)
ANTALYA, TURKEY - NOVEMBER 15: US President Barack Obama (L) speaks with Russian President Vladimir Putin (R) prior to the opening session of the G20 Turkey Leaders Summit on November 15, 2015 in Antalya, Turkey. (Photo by Cem Oksuz/Anadolu Agency/Getty Images)
