Columbia subject headings:
Europe--Foreign relations--1989-
Europe--Foreign relations--United States.
United States--Foreign relations--1989-
United States--Foreign relations--Europe.
World politics--1989-
Harvard subject headings:
Europe--Foreign relations--1989-
Europe--Foreign relations--United States.
United States--Foreign relations--1989-
United States--Foreign relations--Europe.
World politics--1989-
Princeton subject headings:
United States--Foreign relations--1993-2001.
World politics--1989-