TY JOUR TI US LAW ENFORCEMENT AGENCIES' PRACTICE OF IMPLEMENTING OPERATIONALLY IN SOLVING CRIME FIGHTING PROBLEMS KW operational investigative activities KW operational penetration KW undercover operations KW police provoca-tion JO VESTNIK ADVANCED TRAINING INSTITUTE OF THE MIA OF RUSSIA AU Bilyk Vladimir Ivanovich, V.I. PY 2025 IS 0 PB All-Russian Advanced Training Institute of the Ministry of the Interior of the Russian Federation