Senior Forensic Anthropologist Dragana Vucetic of the International Commission on Missing Persons (ICMP) works to attempt to identify the remains of a victim of the Srebrenica massacre, at the ICMP centre near Tuzla, Bosnia and Herzegovina, June 11, 2015. On Saturday, Bosnia marks the 20th anniversary of Europe’s worst mass killing since World War Two - the slaughter of some 8,000 Muslim men and boys by Bosnian Serb forces during five July days in 1995. Even now, the forests and farmland around Srebrenica are yielding bones; over 1,000 victims are missing, tossed into pits then dug up months later and scattered in smaller graves by Bosnian Serb forces trying to conceal the crime. Picture is taken June 11, 2015. REUTERS/Dado Ruvic