Columbia subject headings:
Europe, Eastern--Foreign relations--1945-1989.
Europe, Eastern--Foreign relations--United States.
United States--Foreign relations--1989-
United States--Foreign relations--Europe, Eastern.
Harvard subject headings:
Europe, Eastern--Foreign relations--1945-
Europe, Eastern--Foreign relations--United States.
United States--Foreign relations--1989-
United States--Foreign relations--Europe, Eastern.
Princeton subject headings:
Europe, Eastern--Foreign relations--20th century.
Europe, Eastern--Foreign relations--United States.
United States--Foreign relations--1989-
United States--Foreign relations--Europe, Eastern.