Columbia subject headings:
Central America--Foreign relations--Soviet Union.
Communism--Central America--History--20th century.
Geopolitics--Central America.
National security--United States.
Soviet Union--Foreign relations--Central America.
Harvard subject headings:
Central America--Foreign relations--Soviet Union.
Communism--Central America--History--20th century.
Geopolitics--Central America.
National security--United States
Soviet Union--Foreign relations--Central America.
Princeton subject headings:
Central America--Foreign relations--Soviet Union.
Communism--Central America--History--20th century.
Geopolitics--Central America.
National security--United States.
Soviet Union--Foreign relations--Central America.