Radovan Karadzic, 70, is the most senior Bosnian Serb leader to be face a verdict for crimes he is accused of committing during the 1992-1995 Bosnian conflict. Judges at the the International Criminal Court Tribunal will begin delivering their verdict at 1pm GMT, (2pm local time), which will be streamed live.
Karadzic protested his innocence during the eight-year trial, at which he represented himself. He claims that atrocities were carried out by military forces independently, not under his orders.
He is accused of direct involvement of two of the worst crimes of the conflict, the 1995 massacre of some 8,000 Muslim men and boys in Srebrenica in 1995, and the gruelling 44-month siege of Sarajevo, in which thousands of civilians were killed by shell and sniper fire.
At least 100,000 people died during the 1992-1995 Bosnian war, with millions made homeless.