Columbia subject headings:
Hostages--Middle East.
Hostages--United States.
Middle East--Foreign relations--United States.
Terrorism--Government policy--United States.
Terrorism--Middle East.
United States--Foreign relations--Middle East.
Harvard subject headings:
Hostages--Middle East.
Hostages--United States
Middle East--Foreign relations--United States.
Terrorism--Government policy--United States
Terrorism--Middle East
United States--Foreign relations--Middle East.
Princeton subject headings:
Hostages--Middle East.
Hostages--United States.
Middle East--Foreign relations--United States.
Terrorism--Government policy--United States.
Terrorism--Middle East.
United States--Foreign relations--Middle East.