NEW : Ratko Mladic declines to answer questions on Sarajevo massacre , Ratko Mladic siege . Ratko Mladic says U.N.-backed court is `` satanic , '' argues testimony could harm his own case . He is called as a defense witness in the trial of ex-Bosnian Serb leader Mladic . He had adopted an elaborate disguise that included long hair and a full beard , and was practicing alternative medicine in the Serbian capital . Both men are being tried on charges of genocide and other war crimes during October of that year .
NEW : Ratko Mladic declines to answer questions on Sarajevo massacre , Ratko Mladic siege . Ratko Mladic says U.N.-backed court is `` satanic , '' argues testimony could harm his own case . He is called as a defense witness in the trial of ex-Bosnian Serb leader Mladic . Both men are being tried on charges of genocide and other war crimes during October of that year .