i got this far in the jfk docs and this stood out;

L1 was originally from Cuba, the document indicates. L1 said he personally saw Cuban leader Fidel Castro explain “why just one assassin could not have possibly killed Kennedy.” The report said Castro ordered a re-enactment of the crime by his best marksmen “and they could not duplicate what Lee Harvey Oswald supposedly did by himself.” L1 then said that three groups carried out JFK’s assassination:

One group of Cubans, one group of ‘mafiosos’ and third group of mercenaries. The third group included a man with a Greek name.

Another file, albeit short, reinforces the notion that the Cubans believed without a doubt there were multiple assassins. From the document:

On 27 Nov Cuban official Ruben (Suarez) spoke with another Cuban official posted in Managua, Maria (Lopez), about the Kennedy assassination. Lopez claimed that Brigadier General Fabian (Escalante) Font of the Ministry of Interior was handling the matter and that he had information that could positively identify the Kennedy assassins.

Oswald Not a KGB Agent?

A November 1991 document includes information suggesting that Oswald was never a spy for the Soviet intelligence organization, the KGB.........more........