3. States should take appropriate measures so that, wherever possible, persons belonging to minorities may have adequate opportunities to learn their mother tongue or to have instruction in their mother tongue. 4. States should, where appropriate, take measures in the field of education, in order to encourage knowledge of the history, traditions. language and culture of the minorities existing within their territory. Persons belonging to minorities should have adequate opportunities to gain knowledge of the society as a whole. 5. States should consider appropriate measures so that persons belonging to minorities may participate fully in the economic progress and development in their country. Article 5 1. National policies and programmes shall be planned and implemented with due regard for the legitimate interests of persons belonging to minorities. 2. Programmes of cooperation and assistance among States should be planned and implemented with due regard for the legitimate interests of persons belonging to minorities. Article 8 1. Nothing in the present Declaration shall prevent the fulfilment of international obligations of States in relation to persons belonging to minorities. In particular, States shall fulfil in good faith the obligations and commitments they have assumed under international treaties and agreements to which they are parties. 2. The exercise of the rights set forth in the present Declaration shall not prejudice the enjoyment by all persons of universally recognized human rights and fundamental freedoms. 3. Measures taken by States to ensure the effective enjoyment of the rights set forth in the present Declaration shall not prima facie, be considered contrary to the principle of equality contained in the Universal Declaration of Human Rights. 4. Nothing in the present Declaration may be construed as permitting any activity contrary to the purposes and principles of the United Nations, including sovereign equality, territorial integrity and political independence of States. Article 9 Article 6 States should cooperate on questions relating to persons belonging to minorities, inter alia, exchanging information and experiences, in order to promote mutual understanding and confidence. The specialized agencies and other organizations of the United Nations system shall contribute to the full realization of the rights and principles set forth in the present Declaration, within their respective fields of competence. Article 7 States should cooperate in order to promote respect for the rights set forth in the present Declaration. ANNEXES 181