I'm no lawyer, but this is big, and disturbing.
According to Fitzgerald's filing, an excerpt of which you'll find below, Libby, 55, testified in 2003 that he provided reporter Judith Miller with information from a classified National Intelligence Estimate after being told by Cheney that Bush "specifically had authorized" him to "disclose certain information in the NIE." Libby also testified that Cheney also specifically directed him to speak to other reporters about information in the classified NIE (which addresses Iraq's purported weapons of mass destruction programs) as well as a cable authored by Plame's husband, former ambassador Joseph Wilson. The leaking of the classified material was apparently done in an effort to counter claims made by Wilson regarding the White House's justification for invading Iraq. The Fitzgerald filing also notes that Libby told grand jurors that he conferred with David Addington, Cheney's counsel, about the leak directive and that Addington told him "that Presidential authorization to publicly disclose a document amounted to a declassification of the document."