Complex sentence: The Serb nationalists killed several hundreds of persons at the area of the entire pre-war municipality of Ključ.Today this killings/the ethnic cleansing are cases in International Criminal Tribunal for the former Yugoslavia and Court of Bosnia and Herzegovina.
Split into simpler sentences: The Serb nationalists killed several hundreds of persons in the area of Ključ. Today these killings are cases in the International Criminal Tribunal for the former Yugoslavia and Court of Bosnia and Herzegovina.