There is no reality in which that will happen. Withdrawal from Gaza was a hard lesson for Israel that no good deed goes unpunished. The Green Line is not a "boundary." It is an armistice line.

UNSCR 242  does not require Israeli withdrawal from territories that it now lawfully occupies. What part of those territories -- if any -- might become Arab is a matter of negotiations. The only relevant law is the Palestine Mandate a confirmed by UN Charter Article 80, leaving the default status of the territories sovereign Israeli land.

Managing Palestinians will be Israel's cross to bear (ha, ha) for some time to come but there is no alternative. Israel does that with compassion considering that the Arab goal is eradicating a Jewish presence from the region.