BELGRADE (AFP) - Ex-Bosnian Serb army chief Ratko Mladic is boycotting a UN war crimes court where he is due Monday to plead on charges over his role in the 1992-95 Bosnian war, including genocide, a lawyer said. "Mladic has told the prison authorities that he does not want to appear in the courtroom today and will not enter a plea," Milos Saljic told AFP on Sunday. "He decided not to reappear as his defence team has not yet been approved," Saljic said. Mladic is supposed to be back to the courtroom Monday to plead to charges of genocide, crimes against humanity and war crimes.