Prosecutors are outlining their evidence against ex-Bosnian Serb army chief General Ratko Mladic over the 1995 Srebrenica massacre.
On the second day of the 70-year-old's genocide trial in The Hague, Yugoslav war crimes tribunal prosecutors will focus on the bloody climax of the 1992-95 Bosnian war, when Serb forces systematically executed some 8,000 Muslim men and boys in the UN-protected enclave in north-eastern Bosnia and buried them in mass graves.
It was the worst massacre in Europe since the Second World War.
Mladic is accused of commanding Bosnian Serb troops who waged a campaign of murder and persecution to drive Muslims and Croats out of territory they considered part of Serbia.
His troops rained shells and snipers' bullets down on civilians in the 44-month-long siege of the Bosnian capital, Sarajevo.
He has refused to enter pleas, but denies wrongdoing.
Yesterday, the frail, 70-year-old defendant had an angry exchange of hand gestures with the families of massacre victims in the public gallery, separated by the bulletproof glass in the courtroom.
"Vulture!" said one woman in the gallery.
Mladic fled into hiding after the war and spent 15 years as a fugitive before international pressure on Serbia led to his arrest last year. Now he is held in a one-man cell in a special international wing of a Dutch jail and receives food and medical care that would likely be the envy of many in Bosnia.
Prosecutors say they will use evidence against Mladic from more than 400 witnesses, although very few of them will testify in court. Much of their evidence will be admitted as written statements.