Columbia subject headings:
Middle East--Foreign relations--United States.
Terrorism--Government policy--United States.
Terrorism.
United States--Foreign relations--Middle East.
World politics--21st century.
Harvard subject headings:
Middle East--Foreign relations--United States.
Terrorism
Terrorism--Government policy--United States
United States--Foreign relations--Middle East.
World politics--21st century
Princeton subject headings:
Middle East--Foreign relations--United States.
Terrorism--Government policy--United States.
Terrorism.
United States--Foreign relations--Middle East.
World politics--21st century.