This is a link to the 1992 United Nations Declaration on the Rights of Persons Belonging to National or Ethnic, Religious and Linguistic Minorities...
http://www.ohchr.org/Documents/Publicat ... tionen.pdf
Unlike the Universal Declaration of Human Rights, implementation is left at the national level, with national governments implementing its terms within national laws. Although there are no equivalent bodies such as the ECHR for appeals, the UN has a number of bodies which oversee and issue reports on its implementation.
Here is part of Article 2...
1. Persons belonging to national or ethnic, religious and linguistic minorities (hereinafter referred to as persons belonging to minorities) have the right to enjoy their own culture, to profess and practise their own religion, and to use their own language, in private and in public, freely and without interference or any form of discrimination.
2. Persons belonging to minorities have the right to participate effectively in cultural, religious, social, economic and public life.
3. Persons belonging to minorities have the right to participate effectively in decisions on the national and, where appropriate, regional level concerning the minority to which they belong or the regions in which they live, in a manner not incompatible with national legislation.
4. Persons belonging to minorities have the right to establish and maintain their own associations.
Again, as with the ECHR, these terms need to be incorporated into any future BBF settlement, ... and as rights are a two way street, incorporated on both sides of the boundary between any future zones.