I strongly think it could be fake.
However, it certainly could be real, too.
The point is really moot. We could've had Cuba as a Caribbean protectorate in the late 50s, but Nixon (then VP under Eisenhower) essentially spit in Castro's face when he came to Washington with his hand out for humanitrian aid and to establish relations in the wake of the revolution.
If we'd ponied up some food and clothes, we'd have cigars
hecho en Habana at the corner drugstore...

Castro only went to the Soviets as a second chance.
Nixon was a dork, but what did we expect..? Castro was a revolutionary, Nixon was a Quaker.
