"Wilson has made many allegations about the source of his wife's outing and was the presumed source of a number of articles in the months leading up to the July Novak column. He was speaking to reporters as well and it is conceivable that many reporters did in fact know about his wife's employment with the Agency. Libby may be able to make the case that many reporters knew about Plame and attack the credibility of Russert. et al."
The above is NOT what the Libby indictments are about. Libby will be brought to trial over alleged lies and false statements that have NOTHING to do with how many reporters knew about Plame's indentity. Libby is alleged to have lied to the grand jury and investigators about the content of his conversations with reporters. Wilson and his wife were not witnesses to these conversations. I don't think you have a very good understanding of legal proceedings in a court of law. I also don't think you've read the indictments.
Read the indictment. It all based on the assumption that Libby lied about his conversation with Russett and that he spread the rumors about Valarie. If it can be shown he was not responsible and it was well known about Valaries CIA involvment it blows the case out of the water. It is then inconceivable that Russett would have not known about Valarie's CIA involvement and thus he NOT Libby is Guilty of perjury.