Russian President Vladimir Putin (R) greets South African President Jacob Zuma as he arrives for the Welcome to Country ceremony by Aboriginal and Torres Strait Island people at 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' Asia-Pacific pivot. REUTERS/Mark Baker/Pool (AUSTRALIA - Tags: POLITICS BUSINESS)