Actually ... that is the very least of Israel’s concerns. I don’t know of any country that has demanded of another, some signed statement or agreement of their “right to exist” ... :-) ... perhaps there is one out there somewhere, but what countries do is simply “defend themselves”.
If Israel comes to an agreement there will be concerns that it has which are very much higher on the list. Netanyahu has outlined those concerns before.
Well the Palestinians have the insane goal that all Jews must die; just as Iran has death to America day.
Both are garbage and should be treated as such based on what they do.