Born in 1922 in Kishinev, Bessarabia, he participated in the Zionist youth movement “Gordonia”. After the beginning of WW2 he moved, together with his family, to the USSR. In 1946 a representative of the “Gordonia” movement arrived in the USSR to help organize the transfer of Jews to Palestine. Leib Kantargi was arrested in 1950 for his participation in the illegal transfer of Jews across the USSR border and was sentenced to 10 years imprisonment. Released in 1955, he went to Israel in 1973.