No tribunal tried to prove legally the guilt of Hitler since he never stood a trial. But the material evidence was there - the camps and more!
Where are all those amazing disapearing death/rape camps in Bosnia or Kosovo, which were visible from satelites, in the midst of hordes of journalists and observers?
It's the same with your claims as to Bosnia's camps - Living Marxism was taken to trial and got their asses handed to them, having to in effect eat their words on the record. Not that the Living Marxism case is necessary to prove the existence of camps - the ICTY has tried numerous Serb defendants in connection with camps in Bosnia, so the only ones able to deny their existence with any conviction are the terminally confused or willfully lying - I leave it up to you to determine whichever one you are.