The right of self-determination belongs to all peoples, it is not a prerogative of the States to grant or deny Article 1 of the ICCPR and ICESCR commit all States parties to implement it.
The mainstream narrative about South Ossetia and Abkhazia is skewed. This article explains why.http://theconversation.com/south-ossetia-the-case-for-international-recognition-118299