NEW YORK, NY - SEPTEMBER 28:  (AFP OUT) Russian President Vladimir Putin takes a call during a luncheon hosted by United Nations Secretary-General Ban Ki-moon at the 70th annual UN General Assembly at the UN headquarters September 28, 2015 in New York City. U.S. President Barack Obama will hold a bilateral meeting with Putin later in the day.  (Photo by Chip Somodevilla/Getty Images)