“On January 27 [2003], the [CIA’s] Berlin station replied that German intelligence ‘has not been able to verify [Iraqi defector] [Curveball’s] reporting. …The source himself is problematical. …[T]o use information from another liaison service’s source whose information cannot be verified on such an important, key topic should take the most serious consideration.’ ”
– Michael Isikoff and David Corn, Hubris, Page 182