State territory — In general — International leases — Panama Canal Zone — Sovereignty within Zone.

Treaties — In general — Forms of — Joint Communiqué and Aide-Mémoire — Relationship to prior oral agreement.

States as international persons — Sovereignty and independence — Conduct of foreign relations — Acts of United States Government concerning flying of flag in Panama Canal Zone and concerning postage stamps to be used and recognition of consular exequaturs in Canal Zone — Sovereignty within Canal Zone — Foreign affairs power committed to legislative and executive branches — The law of the United States of America.