Columbia subject headings:
IS (Organization)
Islamic fundamentalism--Political aspects--History.
Kharijites.
Radicalism--Arab countries--History.
Religious militants--Arab countries--History.
Terrorism--Religious aspects--Islam.
Violence--Religious aspects--Islam.
Harvard subject headings:
Princeton subject headings:
IS (Organization)
Islamic fundamentalism--Political aspects--History.
Kharijites.
Radicalism--Arab countries--History.
Religious militants--Arab countries--History.
Terrorism--Religious aspects--Islam.
Violence--Religious aspects--Islam.