Columbia subject headings:
Central America--Foreign relations--Soviet Union.
Central America--Foreign relations--United States.
Geopolitics--Central America.
National security--Central America.
National security--United States.
Soviet Union--Foreign relations--Central America.
United States--Foreign relations--Central America.
Harvard subject headings:
Central America--Foreign relations--Soviet Union.
Central America--Foreign relations--United States.
Geopolitics--Central America.
National security--Central America.
National security--United States
Soviet Union--Foreign relations--Central America.
United States--Foreign relations--Central America.
Princeton subject headings:
Central America--Foreign relations--Soviet Union.
Central America--Foreign relations--United States.
Geopolitics--Central America.
National security--Central America.
National security--United States.
Soviet Union--Foreign relations--Central America.
United States--Foreign relations--Central America.