I fervently hope he is mis-informed;but,if (failing)memory serves,the parties to the conflict have been at it for over 800 years.and the layers of attacks and reprisals;charges and counter-charges are like onion skins-with who knows what at the center.
One would think-by now-there would be an open book;and I suppose there is: the opposing pages written in different languages,with no Rosetta stone.
I can see why you would think that. But the "Rosetta Stone" to this, isn't really about the squabbles between the ethnicities who live there. Those were just exploitable cleavages. It is in the machinations of the outside globalist political forces who have intervened to divide up the Balkans and sell them off to the highest bidder.
The propaganda is that the ethnicities act against each other and then the West "reacts" with intervention -- when it is in fact, the other way around. We, in the West, act and then they react over there -- usually by killing each other.