U.S. President Barack Obama (R) talks with German Chancellor Angela Merkel as they arrive at The Queensland Gallery of Modern Art for an official function during the G20 summit in Brisbane November 15, 2014. The meeting of leaders of the Group of 20 economies has opened in Brisbane with Australian Prime Minister Tony Abbott stressing the importance of global economic issues at a summit that has been dominated by the crisis in Ukraine, climate change and the United States's Asia-Pacific pivot. REUTERS/Chris Hyde/Pool (AUSTRALIA - Tags: POLITICS BUSINESS)