U.S. President Barack Obama (R) meets Russia's President Dmitry Medvedev at the APEC Summit in Yokohama November 14, 2010. REUTERS/Dmitry Astakhov/RIA Novosti/Kremlin (JAPAN - Tags: POLITICS) FOR EDITORIAL USE ONLY. NOT FOR SALE FOR MARKETING OR ADVERTISING CAMPAIGNS. THIS IMAGE HAS BEEN SUPPLIED BY A THIRD PARTY. IT IS DISTRIBUTED, EXACTLY AS RECEIVED BY REUTERS, AS A SERVICE TO CLIENTS