%0 Journal Article %T Problems of defining and distinguishing the concepts of «Extremism» and «Terrorism» in criminal law science %A Gusaim, I.V. %K criminal law science, differentiation of concepts, extremism, terrorism, national security, public safety, criminal ideology, legal definitions, radicalization, law enforcement practice, state security %J CRIMINOLOGICAL JOURNAL %D 2026 %N 0 %P 8 %I Moscow University of the Ministry of Internal Affairs of Russia named after V.Ya. Kikot