Columbia subject headings:
Persian Gulf States--Foreign economic relations.
Persian Gulf States--Politics and government--21st century.
Persian Gulf States--Social conditions--21st century.
Harvard subject headings:
Persian Gulf States--Foreign economic relations.
Persian Gulf States--Politics and government--21st century.
Persian Gulf States--Social conditions--21st century.
Princeton subject headings:
Persian Gulf States--Foreign economic relations.
Persian Gulf States--Politics and government--21st century.
Persian Gulf States--Social conditions--21st century.