Columbia subject headings:
Colombia--Foreign relations--United States.
Drug control--Central America--International cooperation.
Drug control--United States.
Drug traffic--Central America.
United States--Foreign relations--Colombia.
Harvard subject headings:
Colombia--Foreign relations--United States.
Drug control--Central America--International cooperation.
Drug control--United States
Drug traffic--Central America.
United States--Foreign relations--Colombia.
Princeton subject headings:
Colombia--Foreign relations--United States.
Drug control--Central America--International cooperation.
Drug control--United States.
Drug traffic--Central America.
United States--Foreign relations--Colombia.