TY JOUR TI TRENDS AND PREREQUISITES FOR COUNTERING EXTREMISM AND TERRORISM IN JAPAN: FEATURES OF STATE POLICY KW counteraction KW extremism KW terrorism KW Japan KW Northeast Asia KW law KW legal regulation KW national legal policy KW threats KW activities KW legality JO Vestnik of the East Siberian institute of the Ministry of internal affairs of the Russian Federation AU Yurkovskiy, A.V. AU Nikonov, P.V. PY 2026 IS 0 PB East Siberian institute of the Ministry of Internal Affairs of the Russian Federation