How video that put Serbia in dock was brought to light

Srebrenica massacre tape has at last forced Belgrade to face up to its war atrocities

For 10 years they have not slept easy. The casual killers of the six cowed and beaten prisoners from Srebrenica were happy to play to the camera that day in July 1995, high on victory and heroes in the eyes of many fellow Serbs. But, as the years have worn on, that sheen has dimmed and the fear has grown. Did the tape still exist? Who had it? Where was it?
For the first time since the execution video was shown at the UN's war crimes tribunal for the former Yugoslavia in The Hague on Wednesday, The Observer can reveal the full story of the tape that has rocked not just Serbia and Bosnia, but the whole world.