Murray Waas, who has been a one-man Woodward and Bernstein in his reporting on the CIA leak investigation, has yet another scoop today:

In two appearances before the federal grand jury investigating the leak of a covert CIA operative’s name, Lewis (Scooter) Libby, the chief of staff to Vice President Cheney, did not disclose a crucial conversation that he had with New York Times reporter Judith Miller in June 2003 about the operative, Valerie Plame, according to sources with firsthand knowledge of his sworn testimony.

The new revelations regarding Libby come as Fitzgerald has indicated that he is wrapping up his investigation and making final decisions as to whether criminal charges will be brought in the case.

Libby also did not disclose the June 23 conversation when he was twice interviewed by FBI agents working on the Plame leak investigation, the sources said…

Meanwhile, in recent days Fitzgerald has also expressed significant interest in whether Libby may have sought to discourage Miller-either directly or indirectly through her attorney-from testifying before the grand jury, or cooperating in other ways with the criminal probe, according to attorneys familiar with Miller’s discussions with prosecutors.

Translation: If Waas is right, the Vice President’s chief of staff is in danger of being indicted for perjury and obstruction of justice—at the very least.