Actually, Saudi Arabia is still in a formal state of war with Israel, I am sure the Israeli will agree to sign a peace treaty and mutual cooperation with them, after all, I cannot see what strategic goals are met by such a state of war.
in the seventies yasser arafat beseiged King Hussein, fired artillery at his palace and tried to take over Jordan. Whereapon the King, with his hashemite guards, originally from mecca and medina, proceeded to kill tens of thousands of PLO supporters and drive them eventually into lebanon