HANGZHOU, CHINA - SEPTEMBER 05:  Chinese President Xi Jinping (R) shakes hand with British Prime Minister Theresa May (L) before their meeting at the West Lake State House  on September 5, 2016 in Hangzhou, China. World leaders have gathered in Hangzhou for the 11th G20 Leaders Summit from September 4 to 5.  (Photo by Etienne Oliveau - Pool/Getty Images)