more with our cnn national analyst bob beir, paul crookshank and gloria borger. he's still vague on this sensitive issue, whether or not the information obtained during these enhanced interrogation techniques helped save lives, helped find bin laden. >> unknowable is the word of the day. when you look at john brennan, you have to understand what he's trying to do is serve a lot of masters here. he's serving the president of the united states, who is ambivalent about this. he's serving the cia, whom he has to defend. and he also knows that in the future, if he stays as cia director, and i believe he will, that he has to repair a relationship with the democrats on that intelligence committee. so what he was saying is, you can't draw a direct line, and he's probably right about that by the way, wolf, between a and b. because in the case of osama bin laden, as we know, interrogators