Columbia subject headings:
Food relief, American--Korea (North)
Korea (North)--Foreign relations--United States.
Nulcear weapons--Korea (North)
United States--Foreign relations--Korea (North)
Harvard subject headings:
Korea (North)--Foreign relations--United States.
United States--Foreign relations--Korea (North)
Princeton subject headings:
Korea (North)--Foreign relations--United States.
United States--Foreign relations--Korea (North)