Cumbre del G20 en Brisbane
Australian Prime Minister Tony Abbott (L) reaches out a hand to greet German Chancellor Angela Merkel as he officially welcomes leaders to the G20 summit in Brisbane November 15, 2014. The meeting of leaders of the Group of 20 economies has opened in Brisbane, with 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/David Gray (AUSTRALIA - Tags: POLITICS BUSINESS)
Australian Prime Minister Tony Abbott (L) reacts as he shakes hands with French President Francois Hollande while officially welcoming leaders to the G20 summit in Brisbane November 15, 2014. A showdown between Western leaders and Russian President Vladimir Putin is likely at the G20 summit in Australia starting on Saturday, following fresh reports of Russian troops pouring into eastern Ukraine. REUTERS/David Gray (AUSTRALIA - Tags: POLITICS)
Leaders meet at the first plenary session at the G20 summit in Brisbane on November 15, 2014. Australia is hosting the leaders of the world's 20 biggest economies for the G20 summit in Brisbane on November 15 and 16. AFP PHOTO / POOL / Kevin Lamarque