Columbia subject headings:
Middle East--Foreign relations--Turkey.
Turkey--Foreign relations--Middle East--21st century.
Turkey--Foreign relations--United States--21st century.
United States--Foreign relations--Turkey--21st century.
Harvard subject headings:
Middle East--Foreign relations--Turkey.
Turkey--Foreign relations--Middle East--21st century.
Turkey--Foreign relations--United States--21st century.
United States--Foreign relations--Turkey.
Princeton subject headings:
Middle East--Foreign relations--Turkey--21st century.
Turkey--Foreign relations--Middle East--21st century.
Turkey--Foreign relations--United States--21st century.
United States--Foreign relations--Turkey--21st century.