Support WBURTwo Decades After Siege, Sarajevo Still A City DividedPlay05:08Download AudioSylvia PoggioliApril 05, 2012 ShareTwenty years ago this week, the Bosnian war began with the siege of Sarajevo, the capital. In this photo, smoke billows from a building in downtown Sarajevo, April 22, 1992, after a Serbian mortar attack. (AP)