CCPR/C/21/Rev.1/Add.6 page 3 relevant guidance. 3/ It stipulates that where a reservation is not prohibited by the treaty or falls within the specified permitted categories, a State may make a reservation provided it is not incompatible with the object and purpose of the treaty. Even though, unlike some other human rights treaties, the Covenant does not incorporate a specific reference to the object and purpose test, that test governs the matter of interpretation and acceptability of reservations. 7. In an instrument which articulates very many civil and political rights, each of the many articles, and indeed their interplay, secures the objectives of the Covenant. The object and purpose of the Covenant is to create legally binding standards for human rights by defining certain civil and political rights and placing them in a framework of obligations which are legally binding for those States which ratify; and to provide an efficacious supervisory machinery for the obligations undertaken. 8. Reservations that offend peremptory norms would not be compatible with the object and purpose of the Covenant. Although treaties that are mere exchanges of obligations between States allow them to reserve inter se application of rules of general international law, it is otherwise in human rights treaties, which are for the benefit of persons within their jurisdiction. Accordingly, provisions in the Covenant that represent customary international law (and a fortiori when they have the character of peremptory norms) may not be the subject of reservations. Accordingly, a State may not reserve the right to engage in slavery, to torture, to subject persons to cruel, inhuman or degrading treatment or punishment, to arbitrarily deprive persons of their lives, to arbitrarily arrest and detain persons, to deny freedom of thought, conscience and religion, to presume a person guilty unless he proves his innocence, to execute pregnant women or children, to permit the advocacy of national, racial or religious hatred, to deny to persons of marriageable age the right to marry, or to deny to minorities the right to enjoy their own culture, profess their own religion, or use their own language. And while reservations to particular clauses of article 14 may be acceptable, a general reservation to the right to a fair trial would not be. 9. Applying more generally the object and purpose test to the Covenant, the Committee notes that, for example, reservation to article 1 denying peoples the right to determine their own political status and to pursue their economic, social and cultural development, would be incompatible with the object and purpose of the Covenant. Equally, a reservation to the obligation to respect and ensure the rights, and to do so on a non-discriminatory basis (article 2 (1)) would not be acceptable. Nor may a State reserve an entitlement not to take the necessary steps at the domestic level to give effect to the rights of the Covenant (article 2 (2)). 3/ Although the Vienna Convention on the Law of Treaties was concluded in 1969 and entered into force in 1980 - i.e. after the entry into force of the Covenant - its terms reflect the general international law on this matter as had already been affirmed by the International Court of Justice in The Reservations to the Genocide Convention Case of 1951.