I think Israel realizes they're on borrowed time, and that's why they've adopted such an overtly aggressive strategy of getting what they want now, making their strategic goals a fait accompli while still receiving protection from America. With America out of the picture, Israel goes the way of Rhodesia.
When you say "Going by the way of Rhodesia" do you mean Israelis will just scatter away, the remaining ones will be under constant threat of violence?
BTW, Israel going the way of Rhodesia is unavoidable. Depending on how things go, it might happen in a few years, or twenty years, but as surely as baby boomers all eventually die, so too will Israel die.