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When an imperious bully like Fidel Castro starts to fear, his instinct is to try to sow fear among his enemies. Today, with his student and benefactor, Venezuelan leader Hugo Chávez, dying of cancer, what the Cuban dictator fears most is that his bankrupt regime in Havana is about to lose billions in critical aid and oil.

So, in an April 27 essay entitled, What Obama Knows, Castro conjures a "river of blood" in Venezuela if the Chavista movement is forced from power by the "oligarchy" or "overthrown" by the United States.