Columbia subject headings:
Imperialism.
International relations and terrorism--Government policy--United States.
Militarism--Government policy--United States.
National security--United States.
Power (Social sciences)--United States.
Terrorism--Government policy--United States.
United States--Foreign relations--19th century.
United States--Foreign relations--2001-2009.
United States--Foreign relations--20th century.
Harvard subject headings:
International relations and terrorism--Government policy--United States.
Militarism--Government policy--United States.
National security--United States
Power (Social sciences)--United States
Terrorism--Government policy--United States
United States--Foreign relations--2001-2009.
United States--Foreign relations--20th century.
Princeton subject headings: