How about this: Palestinians keep what they were given by the UN minus what Israel took in the 1948 war, but including everything on their side of the Green Line, UN observers on the ground in Palestinian areas, Palestinians only held responsible for whether or not they (and not other countries over which they have no control) agree to Israel's existance, reasonable borders (Israel honors the Green Line unless a mutually acceptable compromise can be made), either A. All of Jerusalem is declared independent, under the control of a committee of Muslim, Jewish, and Christian clerics, or B. East Jerusalem is included in Palestine, and execution or other reasonable punishment of anyone on either side who commits any acts that are in violation of the Geneva Convention, with an international body being responsible for deciding whether or not anyone has violated the Geneva Convention.