And then we have David Slawson, who thinks LHO did it because Marina wouldn't kiss and make up.
Here's what Slawson wrote in a now-declassified WC memo back in 1964:
"The evidence here could lead to anti-Castro involvement in the assassination on some sort of basis as this: Oswald could have become known to the Cubans as being strongly pro-Castro. He made no secret of his sympathies, and so the anti-Castro Cubans must have realized that law enforcement authorities were also aware of Oswald's feelings and that, therefore, if he got into trouble, the public would also learn of them. The anti-Castro group may have even believed the fiction Oswald tried to create that he had organized some sort of large, active Fair Play for Cuba group in New Orleans. Second, someone in the anti-Castro organization might have been keen enough to sense that Oswald had a penchant for violence that might easily be aroused...On these facts, it is possible that some sort of deception was used to encourage Oswald to kill the President when he came to Dallas. Perhaps 'double agents' were even used to persuade Oswald that pro-Castro Cubans would help in the assassination or in the get-away afterwards. The motive of this would of course be the expectation that after the President was killed Oswald would be caught or at least his identity ascertained, the law enforcement authorities and the public would then blame the assassination on the Castro government, and the call for its forceful overthrow would be irresistible."
Slawson also dropped this little bombshell on researcher Amanda Rowell in 1992: "
Yes, I listened to the tape of Lee Harvey Oswald's telephone conversations with the Soviet Embassy in Mexico City. I did not feel that the voice sounded any different from what I expected his voice would sound like...since Oswald was killed only two days after the assassination, of course he was not around, still talking. No one, therefore, can honestly claim to have compared his voice on this tape or anyplace else with what he actually sounded like." (Livingstone, Killing the Truth)
Slawson seems to imply that there are no recordings of Oswald's voice from the assassination weekend, when indeed there are several, not to mention from New Orleans. But here is further proof that the Mexico City tapes were not destroyed by the CIA.