Fidel Castro. - File photo

Juanita worked for the the US Central Intelligence Agency (CIA) as collaborator, effectively working against her brothers' rule in Cuba before going into exile in the U.S. in 1964. Juanita's revelations came on the eve of her book launching, detailing her role as collaborator for the CIA against her brothers Fidel and Raul. The book, entitled Fidel and Raul, My Brothers, the Secret History is co-written by Maria Antonieta Collins, a Mexican Journalist. Juanita said she first supported the leadership of Fidel and brother Raul who ruled Cuba with an iron hand for nearly half a century. She confided she was disillusioned by the way her brother Fidel was executing opponents of his regime and moving the country toward communism. She said she was disenchanted with the regime after witnessing so much injustice committed on the Cuban people. As Abs-cbn news reports:

Juanita Castro said that from her house in Havana, she had worked to shelter and help those who were being persecuted by Fidel Castro's government. "My situation in Cuba became delicate because of my activity against the regime," she said. She told Collins that one day a person close to both her and Fidel Castro brought her an invitation from the CIA asking her to collaborate with the U.S. spy agency.

"They wanted to talk to me because they had interesting things to tell me, and interesting things to ask me, such as if I was willing to take the risk, if I was ready to listen to them -- I was rather shocked, but anyway I said yes," Juanita Castro told Collins. Collins revealed that from 1961 to 1964, Juanita's work focused on trying to save her compatriots from harm and from Fidel's cruel regime. After her exile to Miami, Juanita spent her time running a pharmaceutical business for more than three decades until she retired in late 2006. She said she last spoke to her brother Fidel in 1963 when their mother died in Habana. She spoke to Raul the following year, just before she left Cuba to go into exile in Miami. Due to his failing health, Fidel Castro handed over leadership of the communist government to his brother Raul who is now actively running the affairs of Cuba.