Jacob De Haas was born on 13 August 1872 in
London to
Dutch Jewish parents Aron and Anna Haarbleek de Haas. At the Third Zionist Congress in 1899, he and
L. J. Greenberg were elected as members of the
Zionist Organization's Propaganda Committee. He moved to the
United States in 1902. Theodor Herzl had suggested to
Richard Gottheil that he hire de Haas as the new secretary of the
Federation of American Zionists (FAZ) to replace
Stephen Samuel Wise. De Haas assumed the leadership of the fragmented American Zionist movement. One of his best known relationships was his friendship with
Louis Brandeis. In 1927, he published a two-volume biography of
Theodor Herzl and was regarded as the most exhaustive study of Theodor Herzl published to that date. Charles Willis Thompson of
The New York Times praised the "vigorous and animated biography". In 1934, he published
Palestine: The Last Two Thousand Years. It was highly praised by the
Jewish Telegraphic Agency: "This book should prove to be the definite history of Palestine. It should take its place alongside of those authoritative texts which serve as standard books of reference." In his later years, he moved away from the "general Zionists" to align himself with the
Revisionist Zionism movement of
Ze'ev Jabotinsky. He served as the movement's representative in the United States. ==Personal life==