their final admission by the u.s., they may use it in future propaganda. bear in mind, too, we've heard from former hostages held by isis that some of them were waterboarded. obviously that was an attempt to link their captivity to those held in guantanamo and other black sites. but you have to also bear in mind the potential of some of the more barbaric techniques described in that report may be used on future u.s. or western hostages. that's a chilling thought, wolf. >> and, karl, very quickly, i know you spent most of your time over there in europe. some u.s. officials who worked in these interrogation programs, cia officials, other officials from the justice department who signed off on it, they now say they're reluctant to go to spain or belgium or france or italy out of fear they could be arrested and charged with war crimes. is that really credible? >> well, there are a number of spanish judges who are very keen on trying to pursue these international human rights cases. but in britain, for example, there have been claims in the courts against the british