Columbia subject headings:
National security--United States.
Terrorism--Government policy--United States.
Terrorism--Prevention.
United States--Foreign relations--1981-1989.
Harvard subject headings:
National security--United States
Terrorism--Government policy--United States
Terrorism--Prevention
United States--Foreign relations--1981-1989.
United States--Foreign relations--1989-
Princeton subject headings:
National security--United States.
Terrorism--Government policy--United States.
Terrorism--Prevention.
United States--Foreign relations--1981-.