poke through their online communications to discuss this more i was joined by trevor aaronson he is the author of the book you see there the terror factory inside the f.b.i.'s manufactured war on terrorism papers explain the history between the f.b.i. and the cia you know this is the f.b.i. the cia always been in competition with each other and that dates back to the founding of the cia paramilitary branch you know back when we were became the acting director of the what became the f.b.i. you know he was adamantly against the creation of a central intelligence agency and since then there have been you know continued kind of territorial scuffles between the cia and the f.b.i. and just the wholesale mistrust you know that that became even more during the cold war when all their game. ended up you know giving information to the soviet union and a bunch of information to the russians at the same time later an f.b.i. agent robert hanssen just saying he was providing information as a double agent and that contributed to this mistrust between the two agencies that ultimately led to nine eleven