The presentation of verbal arguments before the UN's highest court began on February 27 and will last until May 9. Experts and witnesses from BH and SCG are taking the witness stand until March 28.
Lukic spoke of relations between the 1990s political leaderships of the then Federal Republic of Yugoslavia (FRY) and the Bosnian Serb entity (RS), and of peace negotiations in Dayton, in which he had taken part within the Bosnian Serb delegation.
Popovic spoked before a 16-judge trial chamber of the performance of the RS government during the war in BH and its relations with the authorities in Belgrade.
The ICJ banned journalists from reporting on the testimonies until March 28.
Former FRY President Zoran Lilic was to have been the first SCG witness to testify before the ICJ but he did not show up so the hearing was cancelled.
Lilic explained his refusal with the nonexistence of official support for his testifying from Serbia's President Boris Tadic and Prime Minister Vojislav Kostunica. Lilic used similar arguments in July 2002 to avoid testifying against Slobodan Milosevic before the International Criminal Tribunal for the former Yugoslavia, but the trial chamber subpoenaed him.
BH launched the genocide claim in March 1993 and this is the first such case before the ICJ. A verdict is expected by the end of the year.