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HANGZHOU, CHINA - SEPTEMBER 04: Chinese President Xi Jinping (right) shakes hands with Saudi Arabian Deputy Crown Prince and Minister of Defense Mohammed bin Salman bin Abdulaziz Al Saud to the G20 Summit on September 4, 2016 in Hangzhou, China. World leaders are gathering in Hangzhou for the 11th G20 Leaders Summit from September 4 to 5. (Photo by Lintao Zhang/Getty Images)

HANGZHOU, CHINA - SEPTEMBER 04:  Chinese President Xi Jinping (right) shakes hands with Saudi Arabian Deputy Crown Prince and Minister of Defense Mohammed bin Salman bin Abdulaziz Al Saud to the G20 Summit on September 4, 2016 in Hangzhou, China. World leaders are gathering in Hangzhou for the 11th G20 Leaders Summit from September 4 to 5.  (Photo by Lintao Zhang/Getty Images)