Barus, Lamhot, et al. “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), vol. 6, no. 1, Jan. 2026, pp. 23-27, doi:10.51601/ijse.v6i1.290.