We fixed the keg said:
This is where I am at.... you aren't protecting sources as they are almost all dead. If it pointed to Castro or the Soviet Union, those leaders are dead and gone. If it pointed to the mob, all of those individuals are dead and any remaining 'families' are heavily incapacitated. Even if it was to cover up gross incompetence in our intelligence or agents, none of those people are even in those positions, let alone alive.
The only thing this could be covering up is part of our government and/or government agencies were complicit or involved. That is the only scenario where any level of retribution would occur.
Seriously, what else could it be?
I'm going with aliens. It's a more credible explanation. Or maybe underwear gnomes.