Columbia subject headings:
Drone aircraft.
IS (Organization)
Islamic fundamentalism.
Strategy.
Terrorism--Religious aspects--Islam.
Violence--Religious aspects--Islam.
Harvard subject headings:
Drone aircraft
IS (Organization)
Islamic fundamentalism
Strategy
Terrorism--Religious aspects--Islam
Violence--Religious aspects--Islam
Princeton subject headings:
Drone aircraft.
IS (Organization)
Islamic fundamentalism.
Strategy.
Terrorism--Religious aspects--Islam.
Violence--Religious aspects--Islam.