Sheremetev Alexander Grigoryevich RussiaSaratovSaratov State University, 83 Astrakhanskaya St., Saratov 410012, Russiaa postgraduate student of the Chair of Historiography, Regional History and Archeologyalexandrsheremetev@yandex.ru Author's articles Religious aspects in foreign policy of the Golden Horde during Berke’s khan reign ПРИ ХАНЕ БЕРКЕ