Judge Patrick Robinson told Milosevic that Seselj's testimony so far did not contain anything that would help his defence.
The former Yugoslav president previously announced that he would question Seselj as his defence witness for 20 hours, which is expected to last two working weeks, but Judge Robinson today warned Milosevic that the trial chamber could break off Seselj's testimony, one of the reasons being his behaviour.
The judge told Seselj he had noticed that he never rose when the judges entered the courtroom, which he said was contrary to the court practice and protocol, to which Seselj said that he never rose because this was not prescribed by the tribunal's rules and because of religious reasons, as Orthodox priests had told him that the robes of the tribunal's judges resembled the clothes of Catholic inquisitors.
He nevertheless agreed to rise if the judges decided not to break off his testimony.
Both the judges and prosecutor Geoffrey Nice warned Seselj several times that he was speaking too loudly and making it difficult for them to follow the translation of his testimony.
Milosevic explained that Seselj always spoke loudly and that he could not behave differently, which Seselj confirmed, continuing his testimony in an even louder tone.
Seselj, whom the Hague tribunal charges with crimes against non-Serbs in Croatia, Bosnia-Herzegovina and Vojvodina, today continued testifying about the war in Kosovo in 1998/99, when he was Serbia's deputy prime minister.
He tried to challenge allegations from the part of the indictment referring to Kosovo by presenting stunning theories, his most frequent conclusion being that the CIA was behind most of the crimes committed in Kosovo.
He claimed, among other things, that "the bodies of dead people from Kosovo were dug up in Serbia in order to cause consternation in the Serbian public at the time Milosevic was kidnapped and transferred to The Hague". He added that the bodies were transferred from Kosovo to Serbia by police generals who sided with the CIA and NATO.
Speaking about the massacre in the Kosovo village of Racak, which led to the NATO operation in Serbia, Seselj said there were no civilians among the people killed in Racak, but only Albanian terrorists, of whom some were dressed in civilian clothes.
He also accused the CIA of being behind the worst atrocities in Sarajevo.
Seselj claimed that NATO had made many areas in Kosovo uninhabitable because it used projectiles with depleted uranium during its bombing campaign.
Seselj will continue his testimony on Wednesday.