- 13 - 19. Section V contains the final clauses which are based on the model final clauses for conventions and agreements concluded within the Council of Europe. COMMENTARY ON THE PROVISIONS OF THE FRAMEWORK CONVENTION PREAMBLE 20. The Preamble sets out the reasons for drawing up this framework Convention and explains certain basic concerns of its drafters. The opening words already indicate that this instrument may be signed and ratified by States not members of the Council of Europe (see Articles 27 and 29). 21. The Preamble refers to the statutory aim of the Council of Europe and to one of the methods by which this aim is to be pursued: the maintenance and further realisation of human rights and fundamental freedoms. 22. Reference is also made to the Vienna Declaration of Heads of State and Government of the member States of the Council of Europe, a document which laid the foundation for the present framework Convention (see also paragraph 5 above). In fact, the text of the Preamble is largely inspired by that declaration, in particular its Appendix II. The same is true of the choice of undertakings included in Sections I and II of the framework Convention. 23. The Preamble mentions, in a non-exhaustive way, three further sources of inspiration for the content of the framework Convention: the Convention for the Protection of Human Rights and Fundamental Freedoms (ECHR) and instruments which contain commitments regarding the protection of national minorities of the United Nations and the CSCE. 24. The Preamble reflects the concern of the Council of Europe and its member States about the risk to the existence of national minorities and is inspired by Article 1, paragraph 1, of the United Nations Declaration on the Rights of Persons belonging to National or Ethnic, Religious and Linguistic Minorities (Resolution 47/135 adopted by the General Assembly on 18 December 1992). 25. Given that the framework Convention is also open to States which are not members of the Council of Europe, and to ensure a more comprehensive approach, it was decided to include certain principles from which flow rights and freedoms which are already guaranteed in the ECHR or in the protocols thereto (see also in connection with this, Article 23 of the framework Convention). 26. The reference to United Nations conventions and declarations recalls the work done at the universal level, for example in the International Covenant on Civil and Political Rights (Article 27) and in the Declaration on the Rights of Persons belonging to National or Ethnic, Religious and Linguistic Minorities. However this reference does not extend to any definition of a national minority which may be contained in these texts.