Embedded Player Maj. Gen. Antonio Taguba blames a "failure in leadership" and "lack of discipline" for abuses at the Abu Ghraib prison in Iraq. Taguba, testifying before the Senate Armed Services Committee, said he found no evidence that the abuses were part of an official U.S. policy. Hear NPR's David Welna, NPR's Michele Norris and Sen. Evan Bayh.