The Yugoslav Wars involved ethnic conflicts and war for independence and was fought by insurgencies in the former Yugoslavia. This led to the breakup of the Yugoslav state. Its constituent republics declared independence due to unresolved tensions between ethnic minorities in the new countries.
The Rwanda was a civil war fought between the Rwandan Armed Forces, representatives of the government of Rwanda and the rebel Rwandan Patriotic Front which was was formed by Ugandans from 1 October 1990 to 18 July 1994. The war arose from the long-running dispute between the Hutu and Tutsi groups within the Rwandan populace.
The Balkan crisis and the Yugoslav war were mostly due to ethnic differences which led to ethnic cleansing.