In a week in which it was burnt by at least one high-profile source, CBS News is being accused by another of having used and abandoned him. The Observer has learned that CBS News and Dan Rather made use of Jonathan (Jack) Idema, a former Green Beret, mercenary and rogue soldier, who was tried and sentenced on Sept. 15 to 10 years in an Afghan prison for operating a private jail and torturing civilians he claimed were Al Qaeda operatives. Mr. Idema is now accusing CBS News of abandoning him after having what appears to have been an ad hoc...