Fidel Castro, 2016

In this April 19, 2016 file photo, Fidel Castro attends the last day of the 7th Cuban Communist Party Congress in Havana, Cuba. Fidel Castro formally stepped down in 2008 after suffering gastrointestinal ailments and public appearances have been increasingly unusual in recent years. Cuban President Raul Castro has announced the death of his brother Fidel Castro at age 90 on Cuban state media on Friday, Nov. 25, 2016. (Ismael Francisco/Cubadebate via AP, File)