Chaim Weizmann that the issuance of the Balfour Declaration was the greatest single achievement of the pre-1948 Zionists. He believed that the Balfour Declaration and the legislation that followed it, such as the (3 June 1922) Churchill White Paper and the League of Nations Mandate for Palestine all represented an astonishing accomplishment for the Zionist movement. On 3 January 1919, Weizmann met Hashemite Prince Faisal to sign the Faisal-Weizmann Agreement attempting to establish the legitimate existence of the state of Israel. At the end of the month, the Paris Peace Conference decided that the Arab provinces of the Ottoman Empire should be
Chaim Weizmann reported the Declaration to Weizmann with elation all round: he repeated "mazel tov" over and over. The Entente had fulfilled its commitment to both Sharif Husein and Chaim Weizmann The Arab Revolt threatened to upset the apple cart. Turkish atrocities never reached Weizmann's ears, at least from the British. Sykes stressed the Entente: "We are pledged to Zionism, Armenianism liberation, and Arabian independence". On 2 December, Zionists celebrated the Declaration at the Opera House; the news of the Bolshevik Revolution, and withdrawal of Russian troops from the frontier war with Turkey, raised the pressure from Constantinople. On 11 December, Turkish