Widespread attacks against Serbian religious sites commenced following the conflict and the return of hundreds of thousands of Kosovo Albanian refugees to their homes. Between the arrival of the Kosovo Force (KFOR) in June 1999 and the 2004 unrest in Kosovo, more than 140 holy sites were destroyed, about half of the historical ones from the 14th and 15th centuries and about half of the recently made ones. Serbenco Eduard explained that the destruction of the opponent's cultural property and cultural genocides took place in the Yugoslav wars, and that religious buildings were targeted due to the nature of the conflict. Destruction was carried out in a systematic manner. András Riedlmayer, Andrew Herscher and Tonka Kostadinova described the destruction of Serbian architectural heritage as revenge attacks. These discourses of viewing Serbian historical architecture as a surrogates of violence within Kosovo Albanian society had the effect of justifying destruction as an endless process, instead of working toward a politics of justice. Due to vandalization, the need arose for the armed force of the UN to protect locations containing Serbian religious heritage in Kosovo. On the other hand, foreign correspondent Robert Fisk criticized describing the destruction as revenge attacks. He explained that the destruction actions were planned and described them as “vandalism with a mission”.