Source: B92, Tanjug
The British draft has had four versions so far, but Belgrade considers the document unacceptable.
The latest version was described as being "closer" to another resolution submitted to the UN - one drafted by Russia - but Serbian officials said the changes were "merely cosmetic."
Nikolic also sent a letter to all other heads of state of Security Council member-countries. In it, the president stresses that the proposed resolution does not contribute to reconciliation, and is instead putting the blame only on one side.
Nikolic sent the letter to the UN Secretary-General Ban Ki-moon as well.
The Security Council will most likely debate the British draft on July 7. Serbia has not yet been officially invited to attend this session.