In anticipation of receiving the Mandate the British switched from military to civilian rule with the appointment of Herbert Samuel as High Commissioner as of 1 July 1920.
1930 – The phrase "double undertaking" was used by Prime Minister Ramsay MacDonald in his April 1930 House of Commons speech,[4] in his 1931 letter to Chaim Weizmann and later in the Passfield white paper.
This was later quoted in the Passfield white paper, with the note that: "His Majesty's Government are fully in accord with the sense of this pronouncement and it is a source of satisfaction to them that it has been rendered authoritative by the approval of the Council of the League of Nations.
[9][10] and with respect to the wider situation that had arisen in Palestine noted that the "disease is so deep-rooted that, in our firm conviction, the only hope of a cure lies in a surgical operation".
Of seven members present, four "did not feel able to state that the policy of the White Paper was in conformity with the Mandate, any contrary conclusion appearing to them to be ruled out by the very terms of the Mandate and by the fundamental intentions of its authors" and three "were unable to share this opinion; they consider that existing circumstances would justify the policy of the White Paper, provided that the Council did not oppose it".