Prosecutors in the trial of the former Bosnian Serb leader Radovan Karadzic say he led a campaign of ethnic cleansing against Muslims during the 1992-95 conflict in Bosnia.<br /><br />The war crimes trial at The Hague began on Tuesday without Karadzic in court, after he made good on his promise to boycott it.<br /><br />Al Jazeera's Tim Friend reports from The Hague.
