Bradley Manning, the Army private arrested in the biggest leak of classified material in U.S. history, offered to plead guilty. The "Associated Press" says he made the plea to charges that could send him to prison for 20 years. He said he exposed the secrets to reveal the American military's "bloodlust" in Iraq and Afghanistan. It was the first time Manning directly admitted leaking the material to the anti-secrecy website WikiLeaks and detailed the frustrations that led him to do it.