I don't think he can walk away, Oil prices, fertiliser shortage. Helium shortage on the horizon too. And Iran are still firing away, using up what remains of Patriot. Gulf states will likely start talking. If the US are not actually protecting us, then get rid of the US bases. I can see individual local deals.
I suppose if the gulf states kick the Americans out, then the oil starts flowing then Trump can walk away ?
I don't think it's too far fetched that Trump dumps Israel even?
I honestly don't think we are out of the woods yet re him using nukes. Small ones. On their nuke sites. Then walk away saying job done.