Yitzhak was among the very first members of the movement in the Sopron area. He completed some hahsharot and took part in the winter camp in Balatonboglár in 1943. He distributed forged documents. In the summer of 1944 Yitzhak went on a tiyul to Romania.
In Israel Yitzhak worked for El-Al (the Israeli Airlines). He resides in Tel-Aviv.