Columbia subject headings:
Cuba--Foreign relations--United States.
United States--Foreign relations--2001-2009.
United States--Foreign relations--Cuba.
Harvard subject headings:
Cuba--Foreign relations--United States.
United States--Foreign relations--2001-2009.
United States--Foreign relations--21st century.
United States--Foreign relations--Cuba.
Princeton subject headings:
Cuba--Foreign relations--United States.
United States--Foreign relations--Cuba.