The Mandate called for for the rights of non-jews to be respected.

Ben Gurion (1937) wrote that he was in favour of partition because he didn't envision a partial Jewish state as the end of the process. "What we want is not that the country be united and whole but that it be united and the whole country be Jewish (bold face mine).
He explained that a first-class Jewish army would permit zionists to settle in the rest of the country with or without the consent of the Arabs ("Letters....", 1971, Univ. Pittsburgh Press).

(From Wikipedia and Encyc. britannica)

The policy envisioned by Ben Gurion is being pursued. Destruction of Palestinian Arab homeland and domination of the Palestinian Arabs as a slave population is still the Israeli objective.