Columbia subject headings:
Political violence--Arabic countries--History--21st century.
Political violence--Religious aspects--Islam.
Terrorism--Religious aspects--Islam.
Harvard subject headings:
Political violence--Arab countries--History--21st century.
Political violence--Religious aspects--Islam
Terrorism--Religious aspects--Islam
Princeton subject headings:
Political violence--Arab countries--History--21st century.
Political violence--Religious aspects--Islam.
Terrorism--Religious aspects--Islam.