"It certainly updates the information that bin Laden was determined to strike within the United States, " said Ben-Veniste, a former prosecutor who worked on the Watergatecase in the 1970s.
The intelligence officer involved in the case, which some commentators are dubbing the French Watergate, has also reaffirmed Mr de Villepin's innocence in an interview with Le Figaro newspaper on Tuesday.
Co-counsel for John Mitchell in the Watergate prosecution, Cacheris also represented convicted CIA spy Aldrich Ames in perhaps the worst espionage case in U.S. history.