TY JOUR TI Reasons for the emergence of the legal institution of operational investigative activity: the authoritative nature of tacit knowledge and national security KW State function KW ensuring national security KW legal institution KW operational investigative activity KW tacit knowledge KW secrecy KW double morality JO Bulletin of the Kaliningrad branch of the Saint-Petersburg University of the Ministry of Internal Affairs of Russia AU , .. AU Lobaseva, E.G. PY 2023 IS 0 PB SAINT-PETERSBURG UNIVERSITY OF THE MINISTRY OF INTERNAL AFFAIRS OF THE RUSSIAN FEDERATION