(L-R, front) U.S. President Barack Obama, Russian President Vladimir Putin and Chinese President Xi Jinping attend a plenary session during the Asia Pacific Economic Cooperation (APEC) Summit in Beijing, November 11, 2014. REUTERS/Alexei Druzhinin/RIA Novosti/Kremlin (CHINA – Tags: POLITICS) ATTENTION EDITORS – THIS IMAGE HAS BEEN SUPPLIED BY A THIRD PARTY. IT IS DISTRIBUTED, EXACTLY AS RECEIVED BY REUTERS, AS A SERVICE TO CLIENTS