“The international community, and in particular the UN, has accepted its share of responsibility with respect to the tragedy at Srebrenica and has worked hard to learn from the lessons of its failures,” said Mr. Guterres in a statement today.

“The difficult task of building trust to allow for full reconciliation in Bosnia and Herzegovina lies with the people of the country's various communities. To build a better and common future, the tragedies of the past must be recognized by those communities,” he added, reaffirming UN's support non-repetition and reconciliation efforts.

In his message, the UN chief also noted that 2017 marks the closing of the International Tribunal for the former Yugoslavia (ICTY), a UN tribunal established to prosecute those persons responsible for serious violations of international humanitarian law committed in the territory of the former Yugoslavia.

Both the ICTY and the International Court of Justice have concluded that the acts committed at Srebrenica constituted genocide. The ICTY has determined the criminal responsibility of different individuals for the Srebrenica massacre and has convicted them of genocide.

“The terrible events […] are historical facts and have been documented extensively,” said Mr. Guterres, speaking of the killing of 8,000 boys and men by Bosnian Serb forces when they overran Srebrenica in July 1995.

“On this day, we remember and honour the thousands of men and boys who were slaughtered, and express our solidarity with the families and friends of those whose lives were taken,” he added.