
Cuban President Raul Castro (2nd R) attends a parade to commemorate the International Workers' Day at the Jose Marti Revolution Square in Havana, Cuba, on May 1, 2017. (Xinhua/Joaquin Hernandez)

Cuban President Raul Castro (2nd R) attends a parade to commemorate the International Workers' Day at the Jose Marti Revolution Square in Havana, Cuba, on May 1, 2017. (Xinhua/Joaquin Hernandez)