From what I know about Guevara (which is not much), Resha's basically right. Former CIA agent Phil Agee was quoted as saying:?

"There was no person more feared by the company that Che Guevara because he had the capacity and charisma necessary to direct the struggle against the against the political repression of the traditional hierarchies in power in the countries of Latin America."

And,
Quote Originally Posted by Resha
Monroe Doctrine or something, I think. (Not sure!)
Kind of, the Roosevelt Corollary (which is really just a tweaking of the Monroe Doctrine) is probably more relevant.