The 1929 Palestine riots caused unrest in the Haganah ranks because the organization was not ready and did not respond appropriately to the Arab attacks . The disputes on this issue led to Tehomi 's departure from the Haganah , and the establishment , in 1931 , of the Haganah Bet , a parallel Zionist organisation that would later become the Irgun , which was more prepared to use violence , and which Tehomi headed . That same year , he left Palestine for the United States on private business , but when he stopped over at Piraeus , his visa was canceled by the US consul for medical reasons , and he returned to Palestine . Tehomi later tried to reunite the two organizations and in 1937 returned to the Haganah in order to take up a senior position . However , approximately only half of the 3,000 fighters of the Irgun followed Tehomi back into the Haganah . The other half retained the Irgun as a separate fighting , engaging in conflict with both British and Arabs in Palestine . When the Haganah failed to fulfill its obligations under the amalgamation agreement , Tehomi resigned , and from then on allegedly engaged in independent illegal immigration activities and intelligence work . Several years later he retired from all activity
1929 Palestine riots
1929 Palestine riots
Avraham Tehomi