SHANGHAI, CHINA - MAY 20: Russian President Vladimir Putin (L) greets Chinese President Xi Jinping (R) as his spouse Peng Liyuan (R) looks on during a welcoming ceremony at the 4th Summit of the Conference on Interaction and Confidence Building Measures in Asia in Shanghai, China on May 20, 2014. Putin is on a two day visit to China (Photo by Sasha Mordovets/Getty Images)