After the Dayton Agreement of 1995 , the Kosovo Liberation Army , ethnic-Albanian paramilitary organisation that sought the separation of Kosovo and the eventual creation of a Greater Albania , began attacking Serbian civilians and Yugoslav army and police , bombing police stations and government buildings , killing Yugoslav police and innocent people of all nationalities , even Albanians who were not on their side . This triggered a Yugoslav interior ministry counter strike , aiming at crippling KLA-members , but since this was a guerilla organization it was hard to establish civilians from insurgents , and Albanian Americans started a lobby in the United States congress . The numbers that US , UK , NATO and UN officials operated with were around 10,000 Kosovo Albanians killed . This triggered a 78-day NATO campaign in 1999 . , mass graves of Kosovar Albanian victims are still being found . There have been many reports of abuses and war crimes committed by the KLA during and after the conflict , such as massacres of civilians ( Lake Radonjić massacre , Gnjilane , Staro Gracko , Klečka etc. ) , prison camps ( Lapušnik ) , organ theft and destruction of medieval churches and monuments
Lake Radonjić massacre
Lake Radonjić massacre
Kosovo Serbs