SIS has been active in the Balkans, playing a vital role in hunting down people wanted by the International War Crimes Tribunal in The Hague. British intelligence operations in the Balkans are thought to have played a vital role in the handover of the former Yugoslav president Slobodan Milošević to The Hague; SIS was also heavily involved in the hunt for Radovan Karadžić and General Ratko Mladic, who are linked to a vast range of war crimes including the murder of Srebrenica's surrendering male population and organising the Siege of Sarajevo.