States as international persons — In general — Sovereignty and independence — Conduct of foreign relations — Conclusiveness of the statements of the Executive — Statement of the Executive as to whether a treaty is in force — Effect of — Whether conclusive — The law of Canada

Treaties — Conclusion and operation — Ratification — Entry into force — Treaty providing for ratification — Treaty also providing for operation from a date to be agreed by parties — Whether ratification essential for treaty to come into force — Effect of failure to ratify — Interpretation of treaties — Relevance of approach of Executive — Canada-France Trade Agreement Act 1933 — The law of Canada