The article «Religious aspects in foreign policy of the Golden Horde during Berke’s khan reign» written by Alexander Sheremetyev is devoted to works analysis of medieval Arabic historians concerning Berke’s khan Muslim devotion. According to the authors Berke’s personal commitment to Islam was the decisive factor in his foreign policy activities. The struggle between the Golden Horde and Mongolian Iran was defined as «Religious War». A. Sheremetyev came to a conclusion that medieval authors exaggerated Berke’s personal commitment to Islam.