Which none of them follow, contrary to the UN charter itself
that includes binding obligations to the Jewish Nation in that territory.
What international law does not oblige for is - establishment of an Arab state.
The sovereignty of each nation is the foundation of international law. Only a sovereign nation is able to agree to an implement international law. When there are terrorists threatening a country, the UN-countries must help.
You claim it is unacceptable when Arab nations create a union. But that is what countries do. I guess it is not not just the others.
Why can´t Israel make peace with neighbors? The others are not much better. Saudi Arabia, ect. But they are secular and no anti-semitism is on their agenda, so this should not be a problem. So now there is Iran in Syria and Lebanon.