Belgrade does not recognize the Kosovo statehood, which was unilaterally proclaimed in 2008, and believes Kosovo is part of Serbia. Earlier this week, US Ambassador to Serbia Michael Kirby called for normalization of the Belgrade-Pristina relations, which, according to him, should include Kosovo's UN membership.
"Serbia will not change its policy on principle…. Serbia, of course, will not support Kosovo's membership of international organizations, including the UN, which would mean the legalization of its unilateral declaration of independence," Dacic said in a statement.
Since then, Belgrade has effectively lost control of Kosovo, as the Serbian government had to agree to a NATO military contingent being stationed in Kosovo, and the subsequent transition of the territory to UN administration.
In 2008, the Albanian government of Kosovo unilaterally declared independence from Serbia.
Last month, Kosovo failed to become a member of the UN cultural agency (UNESCO), which did not surprise Belgrade, as it said Kosovo's candidacy was not viable.