Treaties — Interpretation of — Agencies of interpretation — Minister for Foreign Affairs — Franco — Spanish Treaty of Establishment, 1862 — “National treatment” — Compatability of condition for exercise of rights with Treaty — Whether opinion of Minister for Foreign Affairs conclusive — The law of France.

The individual in international law — Aliens — Position of — Treatment by and responsibilities of the receiving State — Right to carry on commercial occupation in France — Franco-Italian Treaties of 17 May 1946 and 23 August 1951 — Most-favoured-nation clause — Franco-Spanish Convention of 7 January 1862 — “National treatment” — Interpretation by Minister for Foreign Affairs — Distinction between restriction on rights conferred by treaty and imposition of conditions for their exercise — Whether requirement that aliens be in possession of commercial identity card compatible with national treatment — The law of France.