From Outside the Beltway:
The irony of the lawyers investigating the leaking of secret information to the press leaking secret evidence to the press is rich, indeed. It amazes me that there never seem to be prosecutions for this action, which are clearly intended to poison to water for those under investigation and which taint the jury pool and harm people's reputations regardless of the disposition of the case.
Otherwise, this is pretty thin stuff. Cheney asked the CIA director who this Wilson character, employed by the CIA for the Niger trip, was. Tenet apparently told him and intimated that Wilson's wife, a trusted CIA employee, suggested him. Later, Libby told reporters that Wilson's wife, a trusted CIA employee, suggested him.
Neither Cheneny nor Libby--not even, presumably Tenet--apparently had any idea that Valerie Plame Wilson's status as a CIA agent was supposed to be a secret. If so, none of them committed the crime which was the purpose of the Fitzgerald investigation. At very worst, Libby apparently tried to hide a perfectly legal conversation with his boss from the investigators. Most likely, he was worried they might leak it to the New York Times who would make a big deal out of it.