I think, although I would like not to, that if Pals choose to leave the ME conflict still would be kept alive by the Arab states and/or Iran, for the autocratic regimes that rule there know they do need this conflict as a very nescessary scapegoat / alibi considering the disaster they bring in their own countries, in order to survive. Pals would not even have influence on that after leaving and propably would be wise to keep a low profile in their new Arab homelands while assimilating themselves (resistance is futile) asap. But two good things for us and Israel: end of dreadfull occupation, and thus return of the all-the-way-behind-Israel conviction and feeling for all Jews and also Gentiles like us. Old days revisited, when Israel was an inspiration and example with a just cause instead of an occupation. Yeah, I know, the Pals...
Islamic State militants blow up ancient Arch of Triumph in Palmyra (Reuters)