Thousands of survivors of the Srebrenica massacre in Bosnia have set off on a symbolic three-day march to the city ahead of events marking its anniversary on Wednesday.
They are retracing their steps back to the city where about 8,000 Muslim men and boys were killed by the Serb military in July 1995.
Bosnian Serb wartime leaders Radovan Karadzic and Ratko Mladic, accused of being responsible for the massacre, remain at large.



















