The Invasion of Cuba: Never the Intention of JFK Hit Sponsors

[Charles Drago]

The Pedro Charles letters were one such hoax that the Cuban exiles used to link Oswald to Castro and spark an invasion of Cuba. Unfortunately Hoover thought they were real and cited them as evidence of conspiracy stemming from Castro and LBJ believed Hoover.
That and other hoaxes related to it were the reason why LBJ ordered a cover-up and formed the Warren Commission.

This could not be more wrong.

There is no evidence to suggest that Hoover and, by extension, LBJ were duped by any evidence concocted to support a Castro/Oswald link.

You are correct that the letters were part of a false flag operation and that the Gusanos were waving that flag with fervor. But the Cuban exiles' twin roles in the assassination conspiracy as Facilitators and, later, False Sponsors must be understood, and to the degree that your construction, " ... the Cuban exiles used [the letters] to link Oswald to Castro and spark an invasion of Cuba" may, intentionally or not, support the conclusion that their roles were other than supporting, it promotes misunderstanding.

We also agree that the World War III threat was a central part of the cover-up -- one that would succeed in direct proportion to the False Sponsor operations and the authority of figures who supported it.

In the latter category: JEH and LBJ.