This study aims to determine the location of the Islamic education curriculum, to overcome radicalism groups. By considering several data, a comparative study was used with objects within three countries, namely Indonesia, Spain, and Thailand. The results showed that ideological and physical resistance groups existed (jihadist groups) based on radicalism in Indonesia, such as the HTI and Mujahideen. Meanwhile, the growing immigrant Muslim communities became a separate gap for the development of the Al-Qaeda network in Spain. Based on the economic downturn and low quality of education, the dangerous international network of Boko Haram was also created in Nigeria.