At the age of thirteen, he joined Betar and during the 1929 Palestine riots and the 1936 riots took an active part in the battle for Tel Aviv. Between 1932 and 1939 he served as an emissary for Betar and the Irgun in Poland, Romania and the Baltic countries. In 1933, he was arrested for five weeks under suspicion of being connected to Brit HaBirionim.