A US marine has pleaded guilty to assault and conspiracy in the killing of an unarmed Iraqi in the town of Hamdania. The marine, Private First Class John Jodka, is the youngest and lowest ranked of the seven charged for the murder of Hashim Ibrahim Awad. The marines shot Awad after pulling him from his home last April. They initially tried to cover up the slaying by placing a rifle at the scene to give the appearance Awad was an insurgent.