Where I start with New Palestine, or Palestine for short, is it's a Diaspora Nation to begin with, as was Israel in the sense many people give the word, even through it had no existence as a jigsaw puzzle piece on the UN game board at first, much as Palestine doesn't today.
Sure we see those maps of shrinking land areas, but those never belonged to a bona fide state, or people wouldn't be clamoring how we still need a state. I'm seeing "Diaspora Nation" and "University" (global network of campuses or bases) as essentially synonymous.
US citizens, counting expats and those deployed to bases outside the US, likewise comprise a Diaspora Nation of sorts. Citizens intermingle. The planet is such that Chinese, Guatemalans, Koreans and Irish Catholics all live in the same cities, even if having, in some cases, their own small and large businesses, schools, travel and real estate agents, restaurants, journalists and so on.
Imagine a Palestine, not typecast as "Muslim" (yet serving many Muslims), not an "ethno-state", that owns a fleet of cruise ships, has skyscrapers in many great cities, scattered farmlands, hotel and rental car chains.
The idea of a "government" owning these things sounds socialistic, but let's talk about a mix of public and private sectors, and let's have no large militia given no extensive borders to defend, but lots of holy sites and many lands to develop (e.g. Guantanamo Bay if the Cubans buy in), so we need an army of engineers.
The same facilities might be shared among several Diaspora Nations in many cases, as when we place new stadium-shaped Old Man River style bases around the world.
We might make these agreements without waiting for big wheels to turn slowly, in the UN or wherever. As private entities, we're free to get on with the formulation of our global states university system, our Promised Land.