More to the point, who wouldn't be sick of the Israelis and the Palestinians at this point?
I too am sick of the Israelis for their contempt for the interests of their most important ally, their continuation of brutalizing colonization of the West Bank, their shameless ethnic engineering in East Jerusalem, their pulverization of Gaza, the direct manipulation of domestic American politics by their ambassador, and on and on. And, yes, I'm also sick of the war crimes and theocratic insanity of Hamas, and the lame passive-aggression of the PA, and the inability of the Palestinian leadership to prepare for actual governance as opposed to the victimized preening and theatrics and violence they prefer to the difficult compromises required if we are to move forward.
And if Rahm Emanuel is sick of them all, one can imagine how the average American feels. My own view is moving toward supporting a direct American military imposition of a two-state solution, with NATO troops on the borders of the new states of Palestine and Israel. I'm sick of having a great power like the US being dictated to in the conduct of its own foreign policy by an ally that provides almost no real benefit to the US, and more and more costs.