Chinese President Xi Jinping and President Obama, seen here during a ceremony at the Great Hall of the People in Beijing, announced pledges to reduce greenhouse gases. HUANG JINGWEN/Xinhua /Landov hide caption

itoggle caption HUANG JINGWEN/Xinhua /Landov

Russia's President Vladimir Putin (right) helps put a shawl or coat on Peng Liyuan, wife of China's President Xi Jinping, as Xi talks to President Obama during a fireworks show celebrating the Asia-Pacific Economic Cooperation session in Beijing. Reuters/Landov hide caption

itoggle caption Reuters/Landov

A Malaysian flag sits on a table among other flags during a news conference at the Trans-Pacific Partnership Free Trade Agreement talks in July 2012 in San Diego. Nearly two and a half years later, the deal remains incomplete. Gregory Bull/AP hide caption

itoggle caption Gregory Bull/AP

President Obama arrives at the Beijing airport Monday. Speaking at the APEC summit, the president unveiled a new deal to ease visa restrictions between the U.S. and China. Lintao Zhang/Getty Images hide caption

itoggle caption Lintao Zhang/Getty Images