Columbia subject headings:
Drug control--United States.
Intelligence service--United States.
National security--United States.
Terrorism.
Weapons of mass destruction.
Harvard subject headings:
Drug control--United States
Intelligence service--United States
National security--United States
Terrorism
Weapons of mass destruction
Princeton subject headings:
Drug control--United States.
Intelligence service--United States.
National security--United States.
Terrorism.
Weapons of mass destruction.