"From the political side, Serbia has defined red lines when its vital, national and state interests are threatened. We are talking, God forbid, about scenarios in which someone kills Serbs, expels Serbs, arranges pogroms, what happened to us 20 or 30 years ago, "RIA Novosti quoted him as saying.
According to the minister, such situations would be a signal when Serbia "cannot just talk and sit idly by."
Vučević noted that the situation in the north of Kosovo and Metohija carries high risks due to Pristina's decisions.
Earlier, thousands of Serbs gathered for new protests in northern Kosovo.
Vučević also said that Pristina is seeking to occupy the north of Kosovo and Metohija.
Serbian President Aleksandar Vučić said that the NATO mission in the partially recognized Republic of Kosovo (KFOR) did not protect the Kosovo Serbs contrary to these guarantees.
The head of state expressed concern that the situation in Kosovo could develop in a very bad direction.