We haven't focused much on this. But the White House stood down and forced AIPAC to cave in its efforts to torpedo the White House's Iran nuclear diplomacy. That happens very rarely. (AIPAC is going back to the well and pouring money now into pushing the Senate into Republican hands next year.) Nobody has ever won anything betting on success from any sort of Israel-Palestine peace-making efforts. A bit of an exaggeration but barely.
But AIPAC's stand down here weakens them considerably, weakens their ability to threaten and successful cajole on the Hill.
So while I still think it's a long, long shot that John Kerry can pull anything off with his efforts to move the two parties to a final settlement, I think this does matter.