There's J Street, for one, and the dawning realization in AIPAC circles that they are losing young American Jews at a pretty scary rate, along with young Americans of most other backgrounds - at least, 'losing' in the sense that they won't just go along with whatever AIPAC says and will look more critically at Israel's actions before deciding whether they support it.
As for Israel, the funny thing is that the Likudnik are looking like the moderates sometimes... especially people like the president. But there's still a majority of the Israeli public which is reasonable on that topic, they're just not very focused on the conflict anymore. Which is understandable enough in many ways - and it's good news too, to the extent that it's due to greater security from terrorist attacks. Obviously not so helpful when it comes to pushing through the painful concessions that real lasting peace would require on the Israeli side as well.
It's funny, I didn't expect my first reply in this thread to be quite like this...