Ahem. I suppose you are referring to Serb snipers during the "Siege of Sarajevo." Actually, at least several of the more "PR-worthy" child shootings in Sarajevo were traced by UN investigators and anti-sniper teams to Bosnian Muslim positions. Yep, Serbs were sniping and shelling, too. But the Bosnian Muslims did their share of sniping and shelling their own people when it suited them for PR purposes.
I might not have made myself clear. I absolutely agree with you that the Bosnian Muslims committed far more atrocities. I was merely saying that the biggest clue in this case is that this guy placed his scope on a child and pulled the trigger. He did not kill him in the heat of the moment during a robbery or during a domestic dispute which happens everyday. Despite the fact that the child lived (thank God) it still must be considered an accurrate shot. He did not spray the area with gunfire. I doubt the fact that the child lived can be attributed to the assassin flinching. I guarantee that he has done this before. The only places where I know of that this occurred is in the former Republic of Yugoslavia and Chechnya. Of those that did the sniping in those areas, how many were hired mercs?
My point being is that someone should compile a database of children who have been shot by a sniper during a conflict. Use that database to get a list of descriptions of known snipers who committed such acts and start to narrow that list. Maybe some where killed during the conflict, some are in jail, some are leading quiet lives in Oshkos, etc...When that list is narrowed down, I would check with private security firms who specialize in protecting businessmen overseas who must have a list of top notch assassins to narrow it down even further. Look to link that list with any of them who has done work for Muslims before LIKE THE BOSNIAN MUSLIMS and you may have something to go on.