Nor did he say why there is a need for a 23rd Arab state.
This whole idea of separate state vs the Southern Syria is only a few decades old, not “900” years of coming and going Arabs who are not connected to today’s group so called “Palestinians”
Because half the population there is Arab. But you will notice that I did not give a preference for the 2-state solution. Israel could also annex the whole area and give full citizenship to the Arabs, set up a confederation a la Swiss with the Arabs, or cede the Arab areas to Jordan. They could also be other solutions that I have not thought of, but they must start with the premise that both the Jewish and Arab populations have an equal right to be there.