CIA: Castro has Parkinson's disease
This could bring the island to a period of instability, if his brother and appointed successor, Raul Castro, who is also the head of the armed forces, is eager to take office but Fidel refuses to step down.
According to analysts, even larger questions remain: How will Castro's henchmen react to his deteriorating health? And, of course, how that could affect the role of Raul as other government officials start their own bids to power.
The article concludes by saying that
The revolution could be hanging by a thread
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