Raul was chosen as president by Cuba 's National Assembly . Fidel Castro 's brother was the leader of Cuba 's opposition for at least 20 years . Fidel Castro announced his resignation last week in a letter published online . The century - old has led the communist party since the 1970s .
Raul Castro chosen as president by Cuba 's National Assembly . Fidel Castro 's brother was the leader of Cuba 's military for at least 50 years . Fidel Castro announced his resignation last week in a letter published online . The 81-year-old has ruled the communist country since the 1950s .