Treaties — Reservations — Interpretative declarations — Circumstances in which interpretative declaration assimilated to reservation — Relevance of title of declaration — European Convention on Human Rights, 1950, Article 64 — Validity of reservations to European Convention on Human Rights — Competence of European Commission on Human Rights to examine validity — Meaning of reservation “of a general character” for purposes of Article 64(1) — Purpose of “brief statement of the law concerned” as required under Article 64(2)

Human rights — Fair trial — Right to interpreter — European Convention on Human Rights, Article 6(3)(e) — Requirement that services of interpreter be provided free of charge — Whether applicable to Switzerland — Swiss declaration regarding Article 6(3)(e) — Effects