Color yourself clueless.
That whole part of the formerly civilized world is full of folks who just plain hate each other for any number of racial, political, religious, and other reasons. The religeous aspects of the whole thing are among the LEAST divisive of the forces involved.
I once heard a special forces soldier with experience there describe the environment as "hate you can taste". Until they ALL overcome that (Bosnians, Serbs, Croats, Albanians, Romas, Christians of various orthodox flavors, muslims, etc), the situation will continue to be an uneasy truce overseen by NATO, EU, UN, and us -- at least until we get an administration smart enough to pull us out of the Balkans all together and turn the stagnant situation over to the Europeans to solve or babysit indefinietly themselves.
Thanks again, Wes Clark & Bill Clinton for your brilliant plans to get us out of there by Christmas.