Picture taken on March 21, 2016 showing US Secretary of State John Kerry (R) talking to Cuban First Vice President Miguel Diaz-Canel before a state dinner at the Revolution Palace in Havana. The 57-year-old First Vice President is the pre-ordained choice of Raul Castro as he steps down on April 19, 2018, ensuring that the vote in the National Assembly to appoint him will be little more than a formality. The successor to Fidel and Raul Castro has spent three decades climbing to the summit of the Communist Party. He is ideally placed to continue to implement the economic reforms initiated by his 86-year-old mentor. / AFP PHOTO / Adalberto ROQUE