A Moscow-trained nuclear scientist, "Fidelito had been appointed Chairman of the Nuclear Energy Commission in 1984, and for a few years it seemed that he was being groomed for an important role; but in 1992 he was abruptly dismissed, and disappeared from view. When a journalist asked Fidel about Fidelito's resignation, Fidel replied with brutal directness. 'There was no resignation. He was fired for incompetence. What's the problem? We don't have a monarchy here.'" https://books.google.com/books?id=esRje8Jo3LMC&pg=PA315 "But in 2000, Raul Castro brokered a reconciliation between his prideful brother, Mirta [Fidelito's mother] and Fidelito, who assumed another position as a senior researcher and professor at the Cuban Academy of Sciences." Still, any chance for a powerful political position for Fidelito had long since vanished. The question/challenge is whether such a chance ever existed.
(If it be objected that Raul was bound to be Fidel's successor, try to make Fidelito next in line after Raul, who after all is 85...)
(If it be objected that Raul was bound to be Fidel's successor, try to make Fidelito next in line after Raul, who after all is 85...)