Columbia subject headings:
Ballistic missile defenses--Europe.
Ballistic missile defenses--United States.
National security--Europe.
National security--United States.
Russia (Federation)--Foreign relations--United States.
United States--Foreign relations--Russia (Federation)
Harvard subject headings:
Ballistic missile defenses--Europe.
Ballistic missile defenses--United States.
National security--Europe
National security--United States
Russia (Federation)--Foreign relations--United States.
United States--Foreign relations--Russia (Federation)
Princeton subject headings: