Group of Bosnian Moslems, refugees from Srebrenica, walk to be transported from eastern Bosnian village of Potocari to Moslem held Kladanj near Olovo July 13, 1995. On July 11, 1995, towards the end of Bosnia's 1992-95 war, Bosnian Serb forces swept into the eastern Srebrenica enclave, a U.N.-designated "safe heaven". There they took 8,000 Muslim men and boys and executed them in the days that followed, dumping their bodies into pits in the surrounding forests. 

Muslim women and children eat snow in order to quench their thirst in anoverloaded UNHCR truck March 31, 1993 during evacuation from besieged Srebrenica. On July 11, 1995, towards the end of Bosnia's 1992-95 war, Bosnian Serb forces swept into the eastern Srebrenica enclave, a U.N.-designated "safe heaven". There they took 8,000 Muslim men and boys and executed them in the days that followed, dumping their bodies into pits in the surrounding forests. 

Moslem refugees in an overloaded UNHCR truck March 31, 1993 during evacuation from besieged Srebrenica as part of agreement between Serbs. On July 11, 1995, towards the end of Bosnia's 1992-95 war, Bosnian Serb forces swept into the eastern Srebrenica enclave, a U.N.-designated "safe heaven". There they took 8,000 Muslim men and boys and executed them in the days that followed, dumping their bodies into pits in the surrounding forests. 

Bosnian Muslim children, refugees from Srebrenica, peer from a truck as they wait to be transported from eastern Bosnian village of Potocari to Moslem held Kladanj near Olovo July 12, 1995. On July 11, 1995, towards the end of Bosnia's 1992-95 war, Bosnian Serb forces swept into the eastern Srebrenica enclave, a U.N.-designated "safe heaven". There they took 8,000 Muslim men and boys and executed them in the days that followed, dumping their bodies into pits in the surrounding forests. 

A Bosnian Muslim man helps his elderly cousin as they wait to be transported from the eastern Bosnian village of Potocari to the Moslem held Kladanj near Olovo July 12, 1995. On July 11, 1995, towards the end of Bosnia's 1992-95 war, Bosnian Serb forces swept into the eastern Srebrenica enclave, a U.N.-designated "safe heaven". There they took 8,000 Muslim men and boys and executed them in the days that followed, dumping their bodies into pits in the surrounding forests. 

A Kenyan UN peacekeeper with his Dutch comrade gives water to an elderly Bosnian Moslem woman, refugee from Srebrenica, as she waits to be transported from the eastern Bosnian village of Potocari to Moslem-held Kladanj near Olovo July 13, 1995. On July 11, 1995, towards the end of Bosnia's 1992-95 war, Bosnian Serb forces swept into the eastern Srebrenica enclave, a U.N.-designated "safe heaven". There they took 8,000 Muslim men and boys and executed them in the days that followed, dumping their bodies into pits in the surrounding forests. 

A single army boot stands abandoned January 27, 1996 on the site in which 2,000 people are believed to have been killed and buried in eastern Bosnian village of Glogovo Selo some 16km from Srebrenica. On July 11, 1995, towards the end of Bosnia's 1992-95 war, Bosnian Serb forces swept into the eastern Srebrenica enclave, a U.N.-designated "safe heaven". There they took 8,000 Muslim men and boys and executed them in the days that followed, dumping their bodies into pits in the surrounding forests. 

Bodies of Muslims killed during the exodus from Srebrenica discovered by the Hague war crimes tribunal experts are seen in a grave near the eastern Bosnian village of Nova Kasaba July 24, 1996. On July 11, 1995, towards the end of Bosnia's 1992-95 war, Bosnian Serb forces swept into the eastern Srebrenica enclave, a U.N.-designated "safe heaven". There they took 8,000 Muslim men and boys and executed them in the days that followed, dumping their bodies into pits in the surrounding forests. 

A forensic expert with the International Commission on Missing Persons (ICMP) holds a photograph found with the remains of a victim of the 1995 Srebrenica massacre, in the ICMP office in the Bosnian town of Tuzla July 7, 2005. On July 11, 1995, towards the end of Bosnia's 1992-95 war, Bosnian Serb forces swept into the eastern Srebrenica enclave, a U.N.-designated "safe heaven". There they took 8,000 Muslim men and boys and executed them in the days that followed, dumping their bodies into pits in the surrounding forests. REUTERS/Damir Sagolj 

International forensic experts examine dozens of bodies of Muslims in a mass grave in the Serb entity of Pilicer September 18, 1996. On July 11, 1995, towards the end of Bosnia's 1992-95 war, Bosnian Serb forces swept into the eastern Srebrenica enclave, a U.N.-designated "safe heaven". There they took 8,000 Muslim men and boys and executed them in the days that followed, dumping their bodies into pits in the surrounding forests. REUTERS/Kevin Coombs 

Bosnian pathologist Rifat Kesetovic examines skulls of victims, in a hospital in the northern Bosnian city of Tuzla March 28, 1997, taken from mass graves and in wooded areas. On July 11, 1995, towards the end of Bosnia's 1992-95 war, Bosnian Serb forces swept into the eastern Srebrenica enclave, a U.N.-designated "safe heaven". There they took 8,000 Muslim men and boys and executed them in the days that followed, dumping their bodies into pits in the surrounding forests. 

Stacks of unidentified corpses line the walls of an underground shelter at a Bosnian morgue in Tuzla March 28, 1997. On July 11, 1995, towards the end of Bosnia's 1992-95 war, Bosnian Serb forces swept into the eastern Srebrenica enclave, a U.N.-designated "safe heaven". There they took 8,000 Muslim men and boys and executed them in the days that followed, dumping their bodies into pits in the surrounding forests. 

Aida Civic, a Bosnian Muslim refugee woman from Srebrenica, screems as she enters a container with remains of around 3,500 killed Bosnian Muslims, most of them from the once U.N. safe zone of Srebrenica, in an identification center of the Institute for missing persons in Tuzla December 10, 2002. REUTERS/Damir Sagolj

Gravestones marked with names of Bosnian Muslims, victims of the 1995 Srebrenica massacre, are prepared in a morgue in the central Bosnian town of Visoko July 6, 2005. REUTERS/Damir Sagolj 

Bullet holes pepper a wall where Muslims were executed in 1995 at an agricultural cooperative in Kravice near Bratunac, March 18, 2015. Serbia arrested eight men on Wednesday suspected of taking part in the 1995 Srebrenica massacre in Bosnia, the first such arrests in the ex-Yugoslav republic of accused gunmen in Europe's worst atrocity since World War Two. REUTERS/Dado Ruvic (BOSNIA AND HERZEGOVINA - Tags: CRIME LAW SOCIETY TPX IMAGES OF THE DAY CIVIL UNREST)

File photo of Dragan Obrenovic, a senior officer and commander within the Bosnian Serb Army, taken in October 1995 near the town of Kljuc. Obrenovic was convicted for persecutions carried out through the murder of hundreds of Bosnian Muslim civilians, committed in and around Srebrenica. Obrenovic was sentenced to 17 years’ imprisonment. 

Undated file photo of Radislav Krstic, a Bosnian Serb General arrested by NATO-led troops in Bosnia on December 2, 1998. In 1998 Krstic was indicted for War Crimes by the International Criminal Tribunal for the Former Yugoslavia in The Hague in connection with the massacre of around 8,000 muslim boys and men on 11 July 1995 during the Srebrenica massacre. He was sentenced to 46 years in prison. 

Bosnian Serb wartime leader Radovan Karadzic (R) and his general Ratko Mladic are seen on Mountain Vlasic in this April 1995 file photo. Prosecutors at a U.N. court in The Hague have called for Karadzic to be sentenced to life in prison for his alleged crimes, including the massacre of over 7,000 men and boys in Srebrenica and the shelling of Sarajevo. Mladic, the Bosnian Serbs' military leader is also currently on trial at the ICTY, where he faces charges of genocide and crimes against humanity. REUTERS/Ranko Cukovic 

Muslim refugee women, survivors from Srebrenica, watch live TV coverage of the trial of former Yugoslav President Slobodan Milosevic February 12, 2002 in their collective refugee center in Tuzla. On July 11, 1995, towards the end of Bosnia's 1992-95 war, Bosnian Serb forces swept into the eastern Srebrenica enclave, a U.N.-designated "safe heaven". There they took 8,000 Muslim men and boys and executed them in the days that followed, dumping their bodies into pits in the surrounding forests. REUTERS/Damir Sagolj 

A Bosnian Muslim woman looks through the window of a bus as she arrives at Potocari in the wartime U.N. protected enclave of Srebrenica July 11, 2001. On July 11, 1995, towards the end of Bosnia's 1992-95 war, Bosnian Serb forces swept into the eastern Srebrenica enclave, a U.N.-designated "safe heaven". There they took 8,000 Muslim men and boys and executed them in the days that followed, dumping their bodies into pits in the surrounding forests.
REUTERS/Damir Sagolj 

A Muslim woman mourns by the coffin of her relative, among 775 newly identified victims of the 1995 Srebrenica massacre, lined up for a joint burial in Potocari July 11, 2010. Each year, bones are matched to a name and buried in a mass funeral on July 11, the anniversary of the Srebrenica massacre of up to 8,000 Muslim men and boys by Bosnian Serb forces. REUTERS/Dado Ruvic 

Names of victims of the 1995 Serb massacre of 8,000 Muslims in the former U.N. "safe area" Srebrenica are seen in front of their graves at a cemetery in Potocari February 24, 2007. REUTERS/Damir Sagolj 

Bosnian Muslim women pray in their corner of the new mosque in Srebrenica, rebuilt at the site of destroyed White mosque, July 5, 2002. On July 11, 1995, towards the end of Bosnia's 1992-95 war, Bosnian Serb forces swept into the eastern Srebrenica enclave, a U.N.-designated "safe heaven". There they took 8,000 Muslim men and boys and executed them in the days that followed, dumping their bodies into pits in the surrounding forests. REUTERS/Damir Sagolj 

Workers dig graves for a ceremony at a memorial center for Srebrenica victims in Potocari July 9, 2005. REUTERS/Damir Sagolj

A Bosnian woman cries beside trucks loaded with the coffins of 775 newly identified victims of the 1995 Srebrenica massacre in front of the Presidency Building in Sarajevo July 9, 2010. Each year, bones are matched to a name and buried in a mass funeral on July 11. REUTERS/Dado Ruvic 

Bosnian women cry near a coffin of their relative, which is one of the 409 coffins of newly identified victims from the 1995 Srebrenica massacre, in Potocari Memorial Center, near Srebrenica July 10, 2013. The bodies of the recently identified victims will be buried on July 11 marking the 18th anniversary of the massacre in which Bosnian Serb forces commanded by Ratko Mladic killed up to 8,000 Muslim men and boys and buried them in mass graves. REUTERS/Dado Ruvic (BOSNIA AND HERZEGOVINA - Tags: SOCIETY CIVIL UNREST) 

A flower is seen at a memorial plaque where the names of killed Muslims in Srebrenica Massacre are written, in Potocari July 10, 2010. Each year bones are matched to a name and buried in a mass funeral on July 11, the anniversary of the Srebrenica massacre of up to 8,000 Muslim men and boys by the Bosnian Serb forces. REUTERS/Dado Ruvic (BOSNIA AND HERZEGOVINA - Tags: POLITICS CONFLICT ANNIVERSARY IMAGES OF THE DAY) 

A Bosnian Muslim girl cries in central Bosnian town of Visoko September 18, 2003 as bodies of her relatives, among 107 Muslims victims from the Srebrenica massacre, are transported for burial. REUTERS/Damir Sagolj 

People carry coffins during a joint burial in Potocari July 11, 2010. Each year, bones are matched to a name and buried in a mass funeral on July 11, the anniversary of the Srebrenica massacre of up to 8,000 Muslim men and boys by Bosnian Serb forces. REUTERS/Dado Ruvic 

Muslim men carry the coffin of one of 534 newly identified victims of the 1995 Srebrenica massacre for a joint burial in Potocari July 10, 2009. REUTERS/Damir Sagolj 

Muslim women mourn by the coffin of their relative, among 775 newly identified victims of the 1995 Srebrenica massacre, lined up for a joint burial in Potocari July 11, 2010. Each year, bones are matched to a name and buried in a mass funeral on July 11, the anniversary of the Srebrenica massacre of up to 8,000 Muslim men and boys by Bosnian Serb forces. REUTERS/Marko Djurica 

Fadila Efendic prays near memorial plaques at the Potocari genocide memorial centre near Srebrenica, March 18, 2015. Fadila lost her son and husband in the Srebrenica massacre. Serbia arrested eight men on Wednesday suspected of taking part in the 1995 Srebrenica massacre in Bosnia, the first such arrests in the ex-Yugoslav republic of accused gunmen in Europe's worst atrocity since World War Two.
REUTERS/Dado Ruvic (BOSNIA AND HERZEGOVINA - Tags: SOCIETY CIVIL UNREST) 

A Muslim woman mourns by the grave of her relative during the funeral of 534 newly identified victims of the 1995 Srebrenica massacre in Potocari July 11, 2009. . REUTERS/Damir Sagolj 

A Muslim woman prays beside the coffin of her relative among 534 newly identified victims of the 1995 Srebrenica massacre lined up for a joint burial in Potocari July 10, 2009. REUTERS/Damir Sagolj 

Women from Srebrenica react to television coverage from The International Court of Justice in front of a wall covered with pictures of their missing loved ones in an office in Tuzla February 26, 2007. REUTERS/Damir Sagolj 

A Bosnian Muslim family cries around coffins containing the remains of their family members inside the Potocari memorial cemetery July 10, 2008, a day before a funeral ceremony to commemorate the 1995 Srebrenica massacre. REUTERS/Nikola Solic 

A Bosnian Muslim woman cries over a fresh grave of her relative during a mass funeral in Potocari July 11, 2005. REUTERS/Damir Sagolj 

Bosnian Muslims pray during a mass funeral for 175 newly identified victims from the 1995 Srebrenica massacre, at Potocari Memorial Center, near Srebrenica July 11, 2014. Family members, foreign dignitaries and guests are expected to attend the ceremony on Friday marking the 19th anniversary of the massacre in which Bosnian Serb forces commanded by military commander Ratko Mladic killed up to 8,000 Muslim men and boys. The remains of the 175 identified victims will be buried at a memorial cemetery during the ceremony, their bodies found in some 60 mass graves around the town. REUTERS/Dado Ruvic (BOSNIA AND HERZEGOVINA - Tags: CIVIL UNREST CONFLICT OBITUARY RELIGION) 

Fadila Efendic prays near the graves of her son and husband at the Potocari genocide memorial centre near Srebrenica, March 18, 2015. Fadila lost her son and husband in the Srebrenica massacre. Serbia arrested eight men on Wednesday suspected of taking part in the 1995 Srebrenica massacre in Bosnia, the first such arrests in the ex-Yugoslav republic of accused gunmen in Europe's worst atrocity since World War Two. REUTERS/Dado Ruvic (BOSNIA AND HERZEGOVINA - Tags: CIVIL UNREST SOCIETY) 

Bosnian Muslims cry near the coffins of relatives before a mass funeral for bodies found in a mass grave, in Kozarac, near Prijedor, July 19, 2014. The collective burial of 284 Bosnian Muslims and Croats, whose remains were found and identified in a northwestern mass grave and believed to be the largest from Bosnia's 1992-95 war, will take place on Sunday. REUTERS/Dado Ruvic (BOSNIA AND HERZEGOVINA - Tags: CONFLICT CIVIL UNREST POLITICS RELIGION TPX IMAGES OF THE DAY)