 At the age of 17, Fleisher returned to Israel and served as a paratrooper in the Israel Defense Forces and was injured in Lebanon during his military service in 1997.Fleisher returned to the US where he completed an undergraduate degree in political science at Yeshiva University, and a Juris Doctorate at the Cardozo School of Law.He received his rabbinic degree from Kollel Agudat Achim in Jerusalem.