Fidel Castro through the years

Cuban rebel leader Fidel Castro, surrounded by the members of his guerrilla movement, listens to a musical performance in the Cuban jungle in 1958.

Fidel Castro lights a cigar while listening to Argentine revolutionary Ernesto “Che” Guevara in this undated photo from the 1960s.

Fidel Castro with Soviet leader Nikita Khrushchev at the United Nations.  (Marty Lederhandler / Associated Press)

Fidel Castro enjoys a Cohiba cigar during a ceremony at the Palace of Receptions in Havana.  (Phil Sandlin / Associated Press)

Fidel Castro addresses the United Nations General Assembly.  (Marty Lederhandler / Associated Press)

Fidel Castro with Nicaragua’s President Daniel Ortega at the opening of a sugar processing plant in the Central American country. Cuban workers built the facility.  (Arturo Robles / Associated Press)

Castro during an interview at his presidential palace in Havana.  (Charles Tasnadi / Associated Press)

Fidel Castro greets Colombian writer Gabriel Garcia Marquez during the 8th International Festival of Latin American Cinema in Havana in 1986.

Fidel Castro arrives in Geneva, Switzerland, in May 1998, to take part in celebrations on the occasion of the 50th anniversary of the World Health and World Trade Organization.

South African President Nelson Mandela greets Fidel Castro as he arrives for the opening of the 12th Non-Aligned Movement summit in Durban, South Africa.

Castro and former President Jimmy Carter attend funeral services for former Canadian Prime Minister Pierre Trudeau in Montreal.  (Jacques Boissinot / Associated Press)

Fidel Castro delivers a speech after former President Jimmy Carter’s arrival at the Jose Marti airport in Havana in 2002.

Castro consults with his brother Raul during a meeting of the Cuban parliament. Castro, the only leader Cuba had known for nearly five decades, would hand the reins of power to his brother after undergoing intestinal surgery in July 2006.   (Adalberto Roque / AFP/Getty Images)

Fidel Castro looks on at his Venezuelan counterpart Hugo Chavez, who claps his hands at the closing ceremony of the Alternative People’s Summit in Cordoba, Argentina, in July 2006.

Clad in his trademark military cap and sunglasses, Fidel Castro gives a speech at the University of Havana in 2010.

Castro at the Cuban Communist Party Congress in Havana, during which he officially relinquished his position as head of the party.  (Adalberto Roque / AFP/Getty Images)

A poster of Fidel Castro is seen on a wall in Havana on Aug. 13, 2016, during celebrations for his 90th birthday.

Members of the Communist Party of India carry placards bearing the image of former Cuban President Fidel Castro during a remembrance rally in Chennai on Nov. 26, 2016.