• Libby doesn't have to communicate with her or encourage her to testify, and he is not asking him to do so, he is just saying it's ok.

The New York Sun reports:

in a written reply to Mr. Fitzgerald, Mr. Tate said he was baffled by the prosecutor's missive. "To say I am surprised at its content is an understatement," Mr. Tate wrote in his September 16 letter, made public by the Times last week. He insisted that he unequivocally reaffirmed the waiver to a lawyer for Ms. Miller more than a year earlier. "Neither my client nor I imagined that her decision to go to jail could be affected by anything that we could do," Mr. Tate said.

Miller lawyer Floyd Abrams confirms Libby's reaching out was a factor in Miller's change-of-mind, but also reiterates that a major component of her decision was Fitzgerald's agreement to limit questioning to Libby.

Mr. Abrams said another important factor in Ms. Miller's agreement to testify was Mr. Fitzgerald's willingness to respect the confidentiality of the reporter's other sources. "He agreed to focus his questioning on Libby," Mr. Abrams said. "The real protection we were getting was other sources with whom she spoke at about the same time, though not on this particular matter."

Abrams previously told Adam Liptak of the New York Times,

The second factor in Ms. Miller's decision to go before the grand jury was a change in the position of the special prosecutor, Mr. Fitzgerald, concerning the scope of the questions she would be asked, according to Mr. Abrams. Mr. Fitzgerald only recently agreed to confine his questions to Ms. Miller's conversations with Mr. Libby concerning the identification of Ms. Wilson, Mr. Abrams said.

Abrams also told Liptak that the notes she turned over "were redacted to omit everything but the notes taken concerning discussions with Libby about Plame."

So, is Tate leaking this letter now? I'd say so. He's the only one who would have it. [I checked the fax number on the top and it seems to belong to the Sun reporter.] Is it just that a battle seems to have erupted between him and Abrams over their prior discussions? Or is he courting public opinion for Libby in case of an impending Indictment, and if so, what is he trying to show that is helpful to Libby?

Update: Go read Jane at Firedoglake. She's burning up on this one.