The 1917 Balfour Declaration was a 67-word letter from British Foreign Secretary Arthur Balfour to Lord Rothschild , pledging British support for a "national home for the Jewish people" in Palestine. Issued on November 2, 1917, during WWI, it aimed to secure Jewish support for the Allies, while pledging to protect the rights of existing non-Jewish communities. The declaration promised a national home for Jews while simultaneously promising to protect the rights of the indigenous Arab population, creating a lasting conflict in the region. The statement was included in the preamble of the League of Nations' Palestine Mandate (1922), giving it international legitimacy. The League of Nations Mandate for Palestine was an official administrative framework, approved on July 24, 1922, and effective from September 1923 , which entrusted Great Britain with managing the territory following the Ottoman Empire's collapse. It mandated the creation of a Jewish national ho...