Palestinian Rights in the Balfour Declaration?

 I just came across this article:

The Balfour Declaration in International Law

which concludes so:

"The Balfour Declaration may have continuing legal relevance—not as a promise of a Jewish national home, which has already been fulfilled, but as a promise for Palestinian rights."

I was so taken aback that I wrote the author so:

If the term used to describe other persons than Jews was simply "non-Jewish communities", which indicated Arabs, Armenians, Syrians, Moslems, Christians and what not, and in the subsequent League of Nations Mandate, that phrase becomes "the inhabitants of Palestine, irrespective of race and religion" while the terms "the Jewish national home"  and "a national home for the Jewish people" are used, and if, in the 1919 agreement between Faisal and Weizmann we find the use of "the Arab State and Palestine", what would provide you any basis for assuming there were/are "Palestinan rights" that apply specifically to a social or national group of Arabs?

To be continued.

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