This article examines the unique character of conversion to Judaism in general and in Israel in particular. It is an act enmeshed with the very definition of Judaism and has implications for the future of Israel as a Jewish state as well as for Israel-Diaspora relations. The role of the Israeli government in conversion, from the very outset of the establishment of the State of Israel, is delineated and its history as a religio-political issue analyzed. Finally, the article discusses alternative approaches for dealing with what some perceive as a very serious Israeli religio-political issue.