** FILE ** Colombian President Juan Manuel Santos, seen here conferring with President Obama in New York in September, are to meet again in Washington to complete a side agreement on labor issues to a free-trade pact. (Associated Press)
Colombia's President Juan Manuel Santos, left, arrives at the scene where a car bomb exploded outside the building of Caracol Radio station in Bogota, Colombia, Thursday, Aug. 12, 2010. The explosion shook Colombia's capital on Thursday, injuring at least six people, police said. No deaths were reported. (AP Photo/William Fernando Martinez)
Presidential candidate Juan Manuel Santos participates in a televised debate in Bogota, Colombia, on Thursday, June 17, 2010. Colombians are holding a presidential runoff on Sunday, June 20, 2010. (AP Photo/Fernando Llano)
