>The Serbs were also killing christian croations.
The war in Croatia started as Belgrade wanting to keep Yugoslavia together, and devolved into a fratricidal ethnic conflict. The local Serbs didn’t trust Zagreb as far as their well-being was concerned. Take a look at what the “Christian” Croatian Ustashe did back during WWII, adn that wasn’t all that long ago.
When the Croat’s political leader was knifed to death by the serb majority leaders on the floor of the “Yugoslav/serb/Triannon” duma in the 20’s a precident was set.