Columbia subject headings:
Korea (North)--Foreign relations--United States.
Korea (North)--Military policy.
United States--Foreign relations--Korea (North)
Harvard subject headings:
Korea (North)--Foreign relations--United States.
Korea (North)--Military policy.
United States--Foreign relations--Korea (North)
Princeton subject headings:
Korea (North)--Foreign relations--United States.
Korea (North)--Military policy.
United States--Foreign relations--Korea (North)