. >> a short journey across the river danube for boris tadic, but a big symbolic gesture. he came to vukovar, where he was met by the croatian president. this was the first time that a serbian leader had come to the village to lay a wreath at the site of one of the worst atrocities of the ethnic conflicts that tore yugoslavia apart. in 1991, more than 200 croats were dragged from a hospital and executed on the site of a former pig farm. serbia has apologized for this infamous deed, but no serbian leader has come in person to say sorry until today. "i came here today to about to the victims, to pay my respects to them, to express our sympathy. i came here to share words of apology, to create the possibility for serbs and croats to open a new page in history." vukovar was bombed repeatedly during a three month siege in 1991. the city changed hands between serb and croat forces in bloody fighting. hundreds were killed. less than 20 years on, grievances remain very strong. but it is hoped the ceremony will help in the slow process of improving relations between the balkan neig