Fidel Castro, Prime Minister of Cuba, smokes a cigar during his meeting with two U.S. senators, the first to visit Castro's Cuba, in Havana, Cuba, Sept. 29, 1974. (AP Photo)

The U.S. National Security Archive has published information that the CIA tried to assassinate Fidel Castro using a diving suit contaminated with Madura foot fungus and tuberculosis bacteria.

The ridiculous idea behind this assassination was to present a diving suit contaminated with tuberculosis along with a watch as a gift to the Cuban leader.  Lawyer James Donovan, who had links to Castro and shared a passion for diving,  would be used to unwittingly hand over  the gift.

Madura Foot X-Ray. Photo Credit.

The report alleges that the plot failed when a CIA lawyer Milan Miskovsky, who was also James Donovan’s handler for the meeting with Castro in 1963, warned Donovan to check that the suit had not been tampered with.

The CIA were very eager to kill the Cuban leader because he became an ally of the Soviet Union, even allowing nuclear weapons, aimed at Americans cities and military targets, to be based on his island.

Fidel Castro in 1959.

This was not the first time the CIA had tried and failed to assassinate Castro.  It’s alleged that the CIA planned on planting explosives in attractive larger-than-usual seashells.  When Castro went diving and came across these unique shells, he would fall into their booby trap.

There have been other well-known attempts, such as the exploding cigar, which, when lit, was supposed to explode in Castro’s face.

According to Marxist revolutionary Che Guevara, "A smoke in times of rest is a great companion to the solitary soldier."

Then there was the notorious and well-known claims that the American mafia associates  were enlisted by the CIA, to kill Castro. The Mafia hated Castro because he had seized all their gambling interests in Havana.

The plotting against Castro ended when President Jimmy Carter forbade the killing of foreign leaders.