Columbia subject headings:
Angola--Foreign relations--United States.
Angola--Military relations--Congo (Brazzaville)
Congo (Brazzaville)--Military relations--Angola.
United States--Foreign relations--Angola.
Harvard subject headings:
Angola--Foreign relations--United States.
Angola--Military relations--Congo (Brazzaville)
Congo (Brazzaville)--Military relations--Angola.
United States--Foreign relations--Angola.
Princeton subject headings:
Angola--Foreign relations--United States.
Angola--Military relations--Congo (Brazzaville).
Congo (Brazzaville)--Military relations--Angola.
United States--Foreign relations--Angola.