First they get rid of Hamas. Second, a State of Palestine that is capitalist in nature. I believe that capitalism is the key to prosperity.
Third, the United States develops nuclear fusion. I know I keep bringing this up in threads that have nothing to do with it, but consider: we are on the edge of developing a technology that will mean that a whole city can be powered by the energy produced in a single glass of water. That will change literally EVERYTHING- every physical need of people around the world, from food to shelter to transportation to leisure time will be incredibly cheap. All of the conflicts the world faces, including this one, will be completely altered. The mullahs of Iran, for example, will no longer have petroleum money to fund terrorism: oil will be worthless. The mullahs and the wealthy Saudis will go away, but the Arab people, not just the Palestinians, will have incredible prosperity that we can’t imagine now, as will the rest of the world. Sounds like a dream doesn’t it? But it’s within our reach within 20-30 years if we’re only willing to do it.