A new country replacing what was Palestine will rise from the Hamasless rubble
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There never was a Palestine, so it cannot be replaced.
The Abraham Accords will fall apart in time - its the nature of muslims to distrust each other, if for no other reason that religious grounds.
Hamas will not disarm, the regions smugglers will keep them in arms and ammo, while the Gazan population will keep them in troops. The battle will rage for more years and more hostages will be taken.
Its been 1400 years of war and slaughter by muslims, and not likely to end before another 1400 with the current Western approach [ which lacks the intrinsic knowledge that Islam already destroyed Western Civilization once ]. The war will only end when the koran with the sunnahs & hadiths are discredited, or Mecca and Medina nuked, or the last muslim dead or converted.
I won’t totally disagree with your cynicism except that this time there is money at stake. Lots of money.
The Arabs , Saudi Arabia and the UAE, are going to invest tons of money and will expect a return on that investment. Maintaining stability to protect the investment will trump Islamic extremism.
That is my version of Trump style optimism