At the genocide memorial centre outside Srebrenica, thousands of simple white gravestones stretch across the gently inclined hillside for as far as the eye can see.
Nearby, over a number of days in July 1995, Bosnian Serb forces systematically murdered around 8,000 Bosniak (Bosnian Muslim) men and boys. It was the worst crime of the Bosnian war, and remains the only massacre on European soil since the second world war to be ruled a genocide.
