They have the right to do whatever they want while they have the backing of a global power and muslims have no global power.But they do have. I don't know how much of it,but they do have. And don't forget that 500,000 Jews lived there before 1948.
While this situation persists they will have all rights and legitimacy. Once there is a global islamic power. There will be a Palestine in a month. And the holy lands will resemble north and South Korea.