The Gulf Cooperation Council (GCC) countries are being affected by the rise of terrorism and radicalism which in turn has been driven by the creation of ISIS’ state in Iraq and Syria in mid-2014. The group’s presence in Iraq and Syria is inciting many Gulf civilians to travel to Syria to take part in the conflict against al-Assad or to act as local fundraisers for the organization. Furthermore, after a while, the Gulf fighters are either moving back to their home countries or to other conflict zones such as Libya and Yemen, and vice versa. This paper examines how GCC countries are countering the threats posed by ISIS to their national security by focusing on the counter-ISIS policies developed on the national level.