Was founded in Vienna by Ze'ev Jabotinsky. For many years there was tension between the World Zionist Organization and the Revisionist Party. Some of it was the result of tactical differences, including the expansion of the Jewish Agency to include non-Zionists. In addition, there was still strong resentment and political tensions in the aftermath of the Arlosoroff murder, which had initially been blamed on the Revisionists. The actual break came with a resolution to prohibit any independent political activity of Zionist organizations. Eleven years later they rejoined the World Zionist Organizaton.