Columbia subject headings:
Persian Gulf Region--Strategic aspects.
Persian Gulf States--Politics and government.
Persian Gulf States--Relations--Saudi Arabia.
Persian Gulf States--Relations--United States.
Saudi Arabia--Politics and government.
Saudi Arabia--Relations--Persian Gulf States.
Saudi Arabia--Relations--United States.
United States--Relations--Persian Gulf States.
United States--Relations--Saudi Arabia.
Harvard subject headings:
Persian Gulf Region--Relations--United States.
United States--Relations--Persian Gulf Region.
Princeton subject headings:
Persian Gulf Region--Relations--United States.
United States--Relations--Persian Gulf Region.