@izzythepush,
The IRA were a bunch of fanatical murderers too, but I would be interested in your reasoning for arguing that neither they nor Hamas fit the bill.
Also, how have you reached the conclusion that Hamas is "quite capable of calling (and more importantly, honoring) a ceasefire?"
Israel may not get to choose who represents Palestinians, but they certainly can choose whether or not they will negotiate with them.
Are you a fan of realpolitik only when it might benefit the Palestinians or are you equally accepting of it when the governments of both our nations employ it to deal with foreign dictators?
Do you really believe that the only hindrance to peace that might be attributable to Hamas is their "rhetorical stance?"