I'm simply pointing out where the moderator, who believes Israel could exist without US or another major power's support, is in disagreement with any serious international policy expert within or outside of Israel. Calling Israel a 51st US state isn't a big deal in Israel, they know.
The econ professor is suggesting cutting off aid to encourage settlers to back off, and giving the money to Palestinian refugees. It's a bit tongue in cheek.
You're not going to find a serious person who thinks Israel can survive without a world power behind it.