Barus, L., Ansyari Siregar, A. and Siahaan, N. (2026) “Optimizing The Role of The Riau Regional Police Mobile Brigade Unit in Countering Radicalism Based on Law No. 5 of 2018 Concerning The Eradication of Criminal Acts of Terrorism”, International Journal of Science and Environment (IJSE), 6(1), pp. 23–27. doi: 10.51601/ijse.v6i1.290.