Complex sentence: Rabbi Yaakov Dov Bleich (born 1964) a U.S.-born rabbi and member of the Karlin-Stoliner Chassidic group, has been widely recognized as chief rabbi of both Kiev and Ukraine since 1992.
Split into simpler sentences: Rabbi Yaakov Dov Bleich (born 1964) is an American-born rabbi and member of the Karlin-Stoliner Chassidic group. He has been widely recognized as chief rabbi of both Kiev and Ukraine since 1992.