Xi Jinping, China's president, left, Stephen Harper, Canada's prime minister, center, and U.S. President Barack Obama watch the Welcome to the Country ceremony, performed by Aboriginal and Torres Strait Island dancers, at the Group of 20 (G-20) summit in Brisbane, Australia, on Saturday, Nov. 15, 2014. Leaders of the world's 20 largest economies including U.S. President Barack Obama and Chinese President Xi Jinping gather in Brisbane this weekend to focus on economic issues. Photographer: Mark Baker/Pool via Bloomberg