Columbia subject headings:
Energy policy.
Persian Gulf Region--Foreign economic relations.
Persian Gulf Region--Strategic aspects.
Petroleum industry and trade--Political aspects--Persian Gulf Region.
Harvard subject headings:
Energy policy
Persian Gulf Region--Foreign economic relations.
Persian Gulf Region--Strategic aspects.
Petroleum industry and trade--Political aspects--Persian Gulf Region
Princeton subject headings:
Energy policy.
Persian Gulf Region--Foreign economic relations.
Persian Gulf Region--Strategic aspects.
Petroleum industry and trade--Political aspects--Persian Gulf Region.