Cuba's President Raul Castro, left, gestures as he stand with Vice President Miguel Diaz Canel during the 7th Cuban Communist Party Congress in Havana, Cuba, Saturday, April 16, 2016.
Cuba's President Raul Castro, left, gestures as he stand with Vice President Miguel Diaz Canel during the 7th Cuban Communist Party Congress in Havana, Cuba, Saturday, April 16, 2016. Ismael Francisco AP
Cuba's President Raul Castro, left, gestures as he stand with Vice President Miguel Diaz Canel during the 7th Cuban Communist Party Congress in Havana, Cuba, Saturday, April 16, 2016. Ismael Francisco AP