Why not? The CIA is a highly compartmentalized organization staffed by people with extremely pragmatic (albeit often relentlessly anti-Bayesian) attitude. As su

Why not? The CIA is a highly compartmentalized organization staffed by people with extremely pragmatic (albeit often relentlessly anti-Bayesian) attitude. As such, they will--and historically have--ally themselves with pretty much anyone if it seems like a plausible way to further their immediate, narrowly-defined mission. As such, supplying arms to Iran was no big deal for them in the 80's, and helping FARC today is likewise no big deal. You have to understand that the typical CIA operative (or at least the ones who get caught doing something egregiously illegal) has absolutely no moral compass. They are purely interested in the narrowest possible operational goals, and this unfortunate reality is extremely well-documented.