Want to browse the shelves? Here are the Library of Congress call numbers for foreign policy and related subjects:
E183.7-183.9 U.S. Diplomatic history. Foreign and general relations.
GN301‑674 Ethnology. Social and cultural anthropology
HG3810-4000 Foreign exchange. International finance. International monetary system
JA71‑80 Theory. Relations to other subjects
JC11‑605 Political theory. The state. Theories of the state
JV6001‑9480 Emigration and immigration. International migration
JZ5‑6530 International relations
KZ2‑6795 Law of nations