BOGOTA, June 15, 2016 (Xinhua) -- Colombia's President Juan Manuel Santos (R) shakes hands with Argentina's President Mauricio Macri, after the welcoming ceremony at Casa de Narino in Bogota, capital of Colombia, on June 15, 2016. Argentine President Mauricio Macri is on a two-day official visit to Colombia. (Xinhua/Jhon Paz)
