Columbia subject headings:
Harvard subject headings:
Asia--Foreign relations--United States
Europe--Foreign relations--United States.
United States--Foreign relations--1989-
United States--Foreign relations--Asia.
United States--Foreign relations--Europe.
Princeton subject headings:
Asia--Foreign relations--United States.
Europe--Foreign relations--United States.
United States--Foreign relations--1989-
United States--Foreign relations--Asia.
United States--Foreign relations--Europe.