Analysis of information sources in references of the Wikipedia article "Sholom Dovber Schneersohn" in English language version.
The most eminent Orthodox rabbis of the first decade of the twentieth century, among them the Lubavitcher rebbe Sholom Dov Ber Schneersohn, issued powerful condemnations of political Zionism. Schneersohn, in 1903, warned that the Zionists "have made nationalism a substitute for the Torah and the commandments… After this assumption is accepted, anyone who enters the movement regards himself as no longer obliged to keep the commandments of the Torah, nor is there any hope consequently that at some time or another he will return, because, according to his own reckoning, he is a proper Jew in that he is a loyal nationalist.
Such a man was Rabbi Chaim Avraham Dov Ber Levine HaCohen, a respected Lubavitcher rabbi and sage who was known as the Malach (Angel). In 1923 he had emigrated to the United States where he received the respect and honor accorded a distinguished Talmudic scholar. In Europe the Malach had been held in high esteem by Rabbi Sholom Dovber Schneersohn (1860-1920)