State succession — Treaties — Extradition Treaty — Whether newly-independent State succeeding to rights and obligations under Extradition Treaty — Denmark-United States Extradition Treaty, 1902 — Whether Iceland becoming party to Extradition Treaty on independence — Significance of the views of the United States and Icelandic Governments — Termination of Treaty between Denmark and the United States — Significance

Treaties — Duration — State succession — Extradition Treaty — Whether binding upon newly-independent State — Termination of treaty by former colonial power subsequent to granting of independence to newly-independent State — Effect

Extradition — Conditions — Allegations that accused would be mistreated if extradited — Whether matter for Executive or courts

Relationship of international law and municipal law — Conduct of foreign relations — Role of the Executive and the courts — Treaties — Determination as to whether treaty in force with foreign State — Whether determination to be made by the Executive or the courts — The law of the United States