...The only that would work for that many millions of people would be genocide or concentration camps or for Israel to give the land with it's people to Egypt and Jordan to sort out...
If it happens, Coyote, Gaza will go first, and it will probably unfold something like this...
1. The Israelis will serve-up logistics support and cash incentives to relocate as many people as are willing to go peaceably, and the IDF will protect them while they are packing up and leaving.
2. For those that have chosen to remain behind, the Israelis will announce (with 24 or 48 or 72 hours advance notice, to give folks a chance to change their minds and leave) a rolling bombardment, north to south, completely leveling all structures as they go, and utilizing mechanized infantry to mop-up as they drive towards the southern border of Gaza.
3. Designated escape corridors will be established through which Gazans may run to the relative safety of the Israelis waiting to process them as involuntary "expelees" - although they may get less in the way of wergeld and logistics support than those more intelligent folk who left earlier.
4. Remaining militants scurrying about the rubble would be exterminated as enemy combatants, after being given a chance to surrender.
5. After that, it's the problem of Jordan, Lebanon, Egypt, Iraq, the Arab League, the UN, whatever... hell, the US would probably chip-in to help with the relocation, along with the rest of the world, and I'd certainly support some of our tax money going to those relocated Palestinian folk.
...I doubt they or other states would be able to take that many people in without severe disruption on a scale that would rival Syria's refugee crisis. They have enough of their own problems to sort out ..
Money fixes everything.
Throw enough money at the problem and the Palestinians are suddenly living amidst quarters and neighborhoods that are luxurious by comparison; sustainable, with a future.
...I think it's a nice fantasy but the fall out would destroy Israel and put it on par with NK, Iran, etc.
Neither a one-state nor two-state solution seem viable any longer.
That leaves Death or Departure, for one side or the other.
Departure is always preferable.
The rest is detail.
If and when the time comes, it will happen so quickly that the world will not have time to do much more than cry-out in alarm and wag its finger and posture and make empty threats.
Then it will be all over, peace and quiet will settle over the region, and, after a few years of ineffective sanctions and wrist slapping, it will be back to business as usual.
The Palestinians will have been rescued - although not in the way many folks would expect - and will be growing fat and happy, elsewhere, with new lives, and new futures.
The Israelis will have all they ever set out to attain, and will not make any trouble beyond the borders of newly-reconquered Eretz Yisrael.
If neither a one nor two-state solution is viable any longer, then this is the last stop before a general slaughtering of the Palestinians.
So long as the Israelis do not engage in such a general slaughter - and relocate their adversaries rather than killing them - chances are, they'll get away with it.
But timing is everything... and the Israelis probably believe that there is still time, before they have to resort to such Draconian (but nearly inevitable) measures.
Or so it seems to this observer.