Pacifier

I think the root of this conflict go back to ~1910 and the first balkan wars. back then the nationalism rised in those areas and resulted in war (Balkan Wars).
Tito surpressed those nationalistic feelings but after his death those feelings rised again and again resulted in war. Slobodan Milošević revived Serb nationalism, but ended up alienating all the other ethnic groups in the federation

History of Yugoslavia

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"It seems to me that the idea of a personal God is an anthropological concept which I cannot take seriously. I also cannot imagine some will or goal outside the human sphere. Science has been charged with undermining morality, but the charge is unjust. A man's ethical behavior should be based effectually on sympathy, education, and social ties and needs; no religious basis is necessary. Man would indeed be in a poor way if he had to be restrained by fear of punishment and hope of reward after death
— Albert Einstein