There blood is being drained not in the service of some comprehensive, cosmopolitan ideal but because the blood in question happens to be Croatian or Serbian or Bosnian. The players are distinctively and ineradicably defined by nationality, and because that is so the game is necessarily one of exclusion. Even if the methods were less sanguinary, the aim would be the same. To be of some other ethnic background is necessarily to enjoy a lower status. Minorities at best enjoy toleration.
Liberal toleration is symmetrical, given by each and received by each.
But the tolerance that one might hope for in a nationality-defined state is a gift bestowed by a superior on an inferior. And it is a gift that can easily be snatched away. As the overworked folks at Rand McNally will testify, the process of comprehensive polities splintering into their component nationalities is well under way. I don't mean to suggest that this is altogether a bad thing. By and large, the regimes that have expired were dreadful.