gettyimagesBRISBANE, AUSTRALIA - NOVEMBER 15: In this handout photo provided by the G20 Australia, (Front row L-R) Russia's President Vladimir Putin, South Africa's President Jacob Zuma, France's President Francois Hollande, Germany's Chancellor Angela Merkel, Japan's Prime Minister Shinzo Abe, Australia's Prime Minister Tony Abbott, China's President Xi Jinping, United States' President Barack Obama, Brazil's President Dilma Rousseff, Saudi Arabia's Crown Prince Salman bin Abdulaziz, Turkey's Prime Minister Ahmet Davutoglu, (middle row L-R) Mexico's President Enrique Pena Nieto, Spain's President of the Government Mariano Rajoy Brey, European Commission President Jean-Claude Juncker, Republic of Korea's President Park Geun-hye, Canada's Prime Minister Stephen Harper, Indonesia's President Joko Widodo, United Kingdom's Prime Minister David Cameron, India's Prime Minister Narendra Modi, Italy's Prime Minister Matteo Renzi, European Council President Herman Van Rompuy, Argentina's Minister of Economy Axel Kicillof, (back Row L-R) FSB Chairman Mark Carney, International Labour Organization Guy Ryder, IMF Managing Director Christine Lagarde, OECD Secretary-General Angel Gurria, Senegal's President Macky Sall, Singapore's Prime Minister Lee Hsien Loong, New Zealand's Prime Minister John Key, Mauritania's President Mohamed Ould Abdel Aziz, Myanmar's President U Thein Sein, World Bank Group President Jim Yong Kim, WTO Director-General Roberto Azevedo and United Nations' Secretary-General Ban Ki-moon pose for a group photo during the G20 Leaders Summit on November 15, 2014 in Brisbane, Australia. World leaders have gathered in Brisbane for the annual G20 Summit and are expected to discuss economic growth, free trade and climate change as well as pressing issues including the situation in Ukraine and the Ebola crisis. (Photo by Andrew Taylor/G20 Australia via Getty Images)