Hillel Halkin is an American-born Jew who has cast his personal and historical lot with Israel. The imaginary American Jewish friend to whom Halkin directs his onrush of argument is an equally committed young Jew who, however, upholds the possibility of a viable Jewish life outside of Israel. He has just returned to the United states after his second visit to Israel and written a letter of his impressions, which triggers the present correspondence. The two friends argue about Zionism, Israel, Jewish history and culture, the nature of Jewishness. As the gauntlet is flung back and forth, Halkin elaborates his case that Jewish history and Israeli history are two lines in the process of converging, so that for all practical purposes the struggle for Jewish survival and the struggle for Israel are the same; and that any Jew who chooses, in the absence of extenuating circumstances, not to live in Israel is removing himself to the peripheries of the struggle for Jewish survival and away from the center of Jewish history. Either/or...sooner or later, today or tomorrow, you will have to decide, Halkin concludes.