On November 2, 1917, Arthur Balfour, then Foreign Secretary, wrote to Lord Rothschild to say that the British Government viewed with favor the establishment in Palestine of a national home for the Jewish people. The consequences of this statement have reverberated throughout the world in a crescendo of bitterness and violence ever since. It interposed a European (mainly Russian) Jewish cultural idea in an Arab land and it led eventually to the Arab-Israeli conflict.

Eleven years before his declaration, Balfour had met the passionate Zionist and emigre chemist Chaim Weizmann while...