<p>In the year since Saddam Hussein was deposed, insurgents have killed nine former Iraqi weapons officials. All had been questioned by the Iraq Survey Group (ISG); at least two had been cooperating with it. Last October, ISG head David Kay said that one scientist was killed because "he was engaged in discussions with us." The most recent victim was Majid Hussein Ali, a well-known nuclear scientist. He took two bullets to the back in February.</p>