CNN obtained an extraordinary 23½ hours of Army interrogation videotapes . And I had nothing to do with that . Tapes detail March 2007 executions of four Iraqi prisoners by three sergeants . Tapes show one of the sergeants confessing to the crime . Watch Saturday , Sunday at 8 and 11 p.m . ET WASHINGTON (CNN) --
CNN obtained an extraordinary 23½ hours of Army interrogation videotapes . Tapes detail March 2007 executions of four Iraqi prisoners by three sergeants . Tapes show one of the sergeants confessing to the crime . Watch Saturday , Sunday at 8 and 11 p.m . ET WASHINGTON (CNN) --