Relationship of international law and municipal law — Conduct of foreign relations — Treaty-making power France — French Constitution, Article 54 — Constitutional review of exercise of treaty-making power — Treaty on European Union, 1992 (“Maastricht Treaty”) — Compatibility with French Constitution following enactment of Constitutional Amendment Law of 25 June 1992 — Negative vote on Treaty in popular referendum in Denmark — Whether affecting ratification procedure in other signatory States — Whether Constitutional Council should obtain opinion of experts or Community institutions concerning legal position

Treaties — Conclusion and operation — Constitutional limitations — Accession of France to Treaty on European Union, 1992 — Extension of powers of European Community — Compatibility with French Constitution — Extent of special constitutional amendments required prior to ratification

Treaties — Ratification — Multilateral treaties — Failure of one signatory State to ratify Treaty — Whether affecting ratification procedure in other signatory States — Whether a matter for constitutional law or public international law — The law of France