All that is interesting. But I wasn't speaking primarily of defectors whose testimony might be suspect. I was really speaking of insurgents who were once allies of ours in past wars or at least not adversaries.
I mentioned "exodus/casablanca". Are there many still alive who were resistance fighters back then who could give a lecture at the CIA? Or any from the Cold War-admittedly we weren't as good at subversion as they were but we did a bit.