Columbia subject headings:
Europe--Foreign relations--21st century.
Europe--Foreign relations--United States.
Globalization.
International relations.
United States--Foreign relations--21st century.
United States--Foreign relations--Europe.
World politics--21st century.
Harvard subject headings:
Europe--Foreign relations--1989---Congresses.
Europe--Foreign relations--United States--Congresses.
September 11 Terrorist Attacks, 2001--Influence--Congresses.
United States--Foreign relations--1989---Congresses.
United States--Foreign relations--Europe--Congresses.
World politics--1989---Congresses
Princeton subject headings:
Europe--Foreign relations--1989---Congresses.
Europe--Foreign relations--United States--Congresses.
September 11 Terrorist Attacks, 2001--Influence--Congresses.
United States--Foreign relations--1989---Congresses.
United States--Foreign relations--Europe--Congresses.
World politics--1989---Congresses.