Neighboring Jordan and Egypt are secured, so your comment is false. Why they are secured you asked? Because they want peace and accept it, in contrast to the ones who don't want it.
Even though your comment is false, let give it a try.
In Israel there are 21% Arabs with Palestinian origin, do you want to get rid of them as well? If not let me know your sophisticated "getting rid of" partition (hint: antisemitism will be reported).
All of the Palestinian economy and Arabs living in Israel are based on the Israeli economy and currency (New Israeli Shekel), getting rid of Israel meaning destroying these people economy (which will only lead to more crime and terror, see Syria as an example).
The United States and Israel have signed multiple bilateral defense cooperation agreements, to include: a Mutual Defense Assistance Agreement (1952); a General Security of Information Agreement (1982); a Mutual Logistics Support Agreement (1991); and a Status of Forces Agreement (1994).
Oh, and Israel has a nuke, so the ones that will try to "get rid of it" will be nuked immediately as a last resort solution, which is a loose-loose situation.