Buenos Aires : Argentina's President Mauricio Macri, front right, points as he and other world leaders gather for the group photo at the start of the G20 Leader's Summit at the Costa Salguero Center in Buenos Aires, Argentina, Friday, Nov. 30, 2018. Bottom, from left, stand Britain's Prime Minister Theresa May, the Netherlands' Prime Minister Mark Rutte, France's President Emmanuel Macron, President Donald Trump, India's Prime Minister Narendra Modi, Chile's President Sebastian Pinera and China's President Xi Jinping. European Council's President Donald Tusk stands far left. Spain's Prime Minister Pedro Sanchez stands fourth from top left. Canada's Prime Minister Justin Trudeau stands behind Trump. European Commission's President Jean-Claude Juncker stands fifth from top right. International Monetary Fund Managing Director Christine Lagarde stands top, fourth from right. South Korea's President Moon Jae-in stands top, third from right.