From the declaration of the establishment of the State of Israel: 14 May 1948

Upon the expiration of the Palestine mandate, the Jewish People’s Council declared the establishment of the State of Israel in the territory designated by the UN partition resolution.

. . . On the 29th of November 1947, the United Nations General Assembly passed a resolution calling for the establishment of a Jewish state in Eretz – Israel; the General Assembly required the inhabitants of Eretz-Israel to take such steps as were necessary on their part for the implementation of that resolution. This recognition by the United Nations of the right of the Jewish people to establish their State is irrevocable.