Ratko Mladi? is a Bosnian Serb former military leader accused of committing war crimes, crimes against humanity and genocide. On 31 May 2011, Mladi? was extradited to The Hague, where he was processed at the detention center that holds suspects for the International Criminal Tribunal for the former Yugoslavia. His trial formally began in the Hague on 16 May 2012.
Mladi? came to prominence in the Yugoslav Wars, initially as a high-ranking officer of the Yugoslav People's Army and subsequently as the Chief of Staff of the Army of the Republika Srpska in the Bosnian War of 1992–1995. In 1995, he was indicted by the International Criminal Tribunal for the former Yugoslavia for genocide, war crimes and crimes against humanity. As the top military general with command responsibility, Mladi? was accused by the ICTY of being responsible for the Siege of Sarajevo and the Srebrenica massacre—the largest mass murder in Europe since the immediate aftermath of World War II. He has often been referred to by Western media as the "Butcher of Bosnia," a title also sometimes applied to Radovan Karadži?, the former President of Republika Srpska.