FILE - In this April 11, 2015, file photo, Cuba's President Raul Castro talks at reporters before turning to leave the staging area of the official group photo of the VII Summit of the Americas in Panama City, Panama. Castro is flanked by his personal assistant and grandson, Raul Guillermo Rodriguez Castro, Venezuela's President Nicolas Maduro, and Prime Minister of Saint Vincent and the Grenadines Ralph Gonsalves. Castro and U.S. President Barack Obama held their first formal meeting in more than half a century on Saturday, clearing the way for a normalization of relations. (AP Photo/Ramon Espinosa, File)