Marta Kos, the European Union’s commissioner for enlargement, has officially canceled her upcoming diplomatic visit to Serbia. The decision follows reports that a tribute event for Ratko Mladić, the former Bosnian Serb military leader convicted of genocide and war crimes by an international tribunal, was being organized.

In a statement regarding the cancellation, the EU emphasized that the glorification of individuals convicted of war crimes stands in direct opposition to the values and principles of the European Union. The visit was intended to discuss Serbia’s progress toward EU membership, a process that requires alignment with the bloc's political and human rights standards.

While the EU has been clear about its stance, the Serbian government has not yet issued a formal response regarding the specific event that triggered the cancellation. The incident highlights the ongoing tension between Serbia’s aspirations for EU integration and the domestic political influence of nationalist figures who continue to honor individuals convicted by the International Criminal Tribunal for the former Yugoslavia. The cancellation marks a significant diplomatic cooling, as the EU continues to pressure candidate nations to distance themselves from the legacy of the 1990s Balkan conflicts.