China's President Xi Jinping waves to children as he is escorted by Costa Rica's President Laura Chinchilla, right, during a welcome ceremony at the presidential house in San Jose, Cost

 

              China
China's President Xi Jinping waves to children as he is escorted by Costa Rica's President Laura Chinchilla, right, during a welcome ceremony at the presidential house in San Jose, Costa Rica, Monday, June 3, 2013. Trinidad, a leading supplier of natural gas, was the first stop of a four-country trip in the region for Xi. After Costa Rica, he has planned stops in Mexico and the United States. (AP Photo/Arnulfo Franco)