As the CIA leak investigation heads toward its expected conclusion this month, it has become increasingly clear that two of the most powerful men in the Bush administration were more involved in the unmasking of operative Valerie Plame than the White House originally indicated. With New York Times reporter Judith Miller's release from jail Thursday and testimony Friday before a federal grand jury, the role of I. Lewis "Scooter" Libby, Vice President Cheney's chief of staff, came into clearer focus. Libby, a central figure in the probe since its earliest days and the vice president's main counselor, discussed Plame with...