HANGZHOU, CHINA - SEPTEMBER 04: (RUSSIA OUT) (3rdL-R) Kazakh President Nursultan Nazarbayev, U.S. President Barack Obama, South African President Jacob Zuma and Chinese President Xi Jinping wave during a photo at the G20 Hangzhou Summit on September 4, 2016 in Hangzhou, China. (Photo by Mikhail Svetlov/Getty Images)
