Karl Rove: It depends on what the meaning of "knowingly" is!

Link
I was reading a report on Karl Rove's apparent testimony to a Grand Jury over the media outing of Valerie Plame, as a CIA operative. What's wrong with most of this story is that we can't believe anyone. First of all, Grand Jury testimony is supposed to be confidential and disclosing testimony is a serious breach of the law. So who is leaking this? Secondly, reporter Bob Novak who appears often on CNN, was the reporter who printed the information in his newspaper column and he is free and not under any investigation. Go figure.

And lastly to quote this from CNN's page on the story today, "Rove has testified at least twice as part of the inquiry, but sources involved previously told CNN that while Rove acknowledged talking to reporters about the issue, he said he never knowingly disclosed classified information." If this is something to be believed, does that mean that Karl is pulling a Bill Clinton when he says, "never knowingly disclosed classified information?" Studying the phrase leads to many questions on my part. Does it mean he may have disclosed the information but he didn't know it was classified, or does it mean he thought it was already disclosed and therefore couldn't be classified, or does it mean he disclosed it but was unaware of what he was doing? I need an expert here to decipher the possible meaning. Is Bill available?