Minutes ago, on Andrea Mitchell, on the subject of Susan Rice, Joe Lieberman just advised his colleagues to "have a little mercy" on Susan Rice, saying that what she did - repeating the Intelligence info given her - was a reasonable this to do. He added that she might have wished she had added an adjective or otherwise slightly differently stated things, but chided his colleagues to realize they often do the same thing.
It was very clearly a break from the views of McCain and Graham, which are usually indsitiguishable.
Obviously, he won't be there to vote, but this seems signifcant.