http://www.tiwanakuarcheo.net/1_main/saa2002.htm
Bosnia: The 1992-95 war in Bosnia and Herzegovina confronted three ethnic groups: Serbs, Bosniacs, and Croats. They fought over land for future territories, in a frenzied nationalistic revival (that brew since the Yugoslav project was abandoned). Serbia and Croatia supported their Bosnian populations, while, as shown by the long siege of Sarajevo, the Bosniacs had no foreign support.
It is only coincidence that these groups have different religions. (For example, there is little sympathy between Bosniacs and Kosovars, both Muslim groups: Bosniacs speak a version of Serbian while Kosovars speak Albanian.)
The war ended in 1995 with the Dayton Peace accords: Serbs secured a separate polity within Bosnia, while Croats and Bosniacs joined in a fragile federation. Croat nationalists continue today to demand a separate Herzegovina polity.

