April 30 1925 – 6 Iyar 5685
The founding conference of opposition elements within the Zionist movement, led by Vladimir Ze’ev Jabotinsky, came to a close with the creation of Ha-Tzohar, officially titled the Association of Revisionist Zionists. Jabotinsky and his followers had walked out of the Zionist Congress after the organization rejected their demands for clear, public action in response to the anti-Zionist steps taken by the British Mandate government. The term ‘revisionist’ referred to Jabotinsky’s followers demands for a revision of the Zionist Organization’s policies and its leadership under Chaim Weizmann, as well as the elected Jewish leadership in Palestine, which had, in their eyes, relinquished aspirations for a state if favor of the status quo of British Mandate Government.
Ha-Tzohar existed until 1935 as a party within the Zionist Organisation, at which point the revisionists split off from the World Zionist Organization to create the New Zionist Organisation. It was strongest in Poland, and its members were instrumental in arranging the Warsaw Ghetto Uprising. None of them survived.