Antic, who is also a professor at the Belgrade Law School, told the Tanjug news agency that top state officials would work together with experts to prepare for the continuation of the suit against Croatia and for a debate on the Hague war crimes tribunal before the United Nations, scheduled for April 2013.

Asked if the continuation of the process before the International Court of Justice (ICJ) would deteriorate Serbia's relations with Croatia, Antic said there was nothing to deteriorate.

"Our relations are not good now either," Antic said.

On 2 July 1999, Croatia filed a genocide lawsuit before the Court against Serbia (then known as the Federal Republic of Yugoslavia), and the ICJ in 2009 declared its jurisdiction over the case.

In its application, Croatia asked the highest UN court to rule that the authorities in Belgrade, controlling the activity of their forces, committed genocide in Croatia and that Croatian citizens were victims of that genocide.

Croatia asked the Court to declare that Serbia has an obligation to punish all perpetrators of the genocide under its jurisdiction, help establish the truth about missing Croatian citizens, return to Croatia cultural artefacts stolen in the said period and pay reparations for damage to persons and property.

After that, in 2010 Serbia filed a genocide counter-suit against Croatia, claiming that Croatia had breached the Convention on the Prevention of Genocide during and in the aftermath of the August 1995 Operation Storm, committing acts the purpose of which was to annihilate a part of the Serb ethnic community living in its Krajina region.