Karl Rove testified Wednesday for the fifth time before a federal grand jury about the alleged White House leak of CIA agent Valerie Plame's identity to the press. In December, John Dickerson explored why Rove's previous testimony was chock full of holes: "Rove first testified before the grand jury in February 2004. In that first visit, he said nothing about talking to Time's Matt Cooper. He also didn't mention Cooper in an earlier interview with the FBI. Then, eight months later, in October 2004, Rove returned to the grand jury to alter his earlier account and volunteered that he had talked to Cooper."