But negotiations were suspended a year ago following the Serbian government's failure to arrest and hand over former Bosnian Serb military commander Ratko Mladic to the International Criminal Tribunal for the former Yugoslavia (ICTY) by April 30th, 2006, as Kostunica had promised.
Međutim, pregovori su prekinuti pre godinu dana, pošto vlada Srbije nije uhapsila i izručila bivšeg komandanta vojske bosanskih Srba Ratka Mladića Međunarodnom krivičnom sudu za bivšu Jugoslaviju (MKSJ) do 30. aprila 2006, kao što je Koštunica obećao.