Correct me if I´m wrong but Kosovo´s autonomy was reduced in 1989 because it was on level of republics of Yugoslavia and in 1990 it was revoked. Same happened in Vojvodina. And that really doesn´t matter ´cause that doesn´t make from Kosovo unique case. Charter of the UN Organisation is proclaiming that borders of the state cannot be chagned without agreement of that state. That´s all what matters. If this was disturbed and international community agree with that (at least those 33 states) than it can be taken as precedens. And I don´t know if you know that Nagorno-Karabakh, South Ossetia and Abkhazia alsready announced that they will appel on international community to recongize these territories of Azerbajan and Georgia as independent states, as well. Their decision was based on Kosovo´s precedens.