CCPR/C/21/Rev.1/Add.9 Page 4 11. Article 12, paragraph 3, provides for exceptional circumstances in which rights under paragraphs 1 and 2 may be restricted. This provision authorizes the State to restrict these rights only to protect national security, public order (ordre public), public health or morals and the rights and freedoms of others. To be permissible, restrictions must be provided by law, must be necessary in a democratic society for the protection of these purposes, and must be consistent with all other rights recognized in the Covenant (see para. 18 below). 12. The law itself has to establish the conditions under which the rights may be limited. State reports should therefore specify the legal norms upon which restrictions are founded. Restrictions which are not provided for in the law or are not in conformity with the requirements of article 12, paragraph 3, would violate the rights guaranteed by paragraphs 1 and 2. 13. In adopting laws providing for restrictions permitted by article 12, paragraph 3, States should always be guided by the principle that the restrictions must not impair the essence of the right (cf. art 5, para. 1); the relation between right and restriction, between norm and exception, must not be reversed. The laws authorizing the application of restrictions should use precise criteria and may not confer unfettered discretion on those charged with their execution. 14. Article 12, paragraph 3, clearly indicates that it is not sufficient that the restrictions serve the permissible purposes; they must also be necessary to protect them. Restrictive measures must conform to the principle of proportionality; they must be appropriate to achieve their protective function; they must be the least intrusive instrument amongst those which might achieve the desired result; and they must be proportionate to the interest to be protected. 15. The principle of proportionality has to be respected not only in the law that frames the restrictions, but also by the administrative and judicial authorities in applying the law. States should ensure that any proceedings relating to the exercise or restriction of these rights are expeditious and that reasons for the application of restrictive measures are provided. 16. States have often failed to show that the application of their laws restricting the rights enshrined in article 12, paragraphs 1 and 2, are in conformity with all requirements referred to in article 12, paragraph 3. The application of restrictions in any individual case must be based on clear legal grounds and meet the test of necessity and the requirements of proportionality. These conditions would not be met, for example, if an individual were prevented from leaving a country merely on the ground that he or she is the holder of “State secrets”, or if an individual were prevented from travelling internally without a specific permit. On the other hand, the conditions could be met by restrictions on access to military zones on national security grounds or limitations on the freedom to settle in areas inhabited by indigenous or minorities communities8. 17. A major source of concern are the manifold legal and bureaucratic barriers unnecessarily affecting the full enjoyment of the rights of the individuals to move freely, to leave a country, including their own, and to take up residence. Regarding the 8 p. 41. See General Comment No. 23, para. 7, in HRI/GEN/1/Rev. 3, 15 August 1997,