US vice-president Joe Biden arrived in Serbia on a landmark visit that has sparked anger among nationalist parties within the Balkan state.
They accuse Biden of being the chief advocate of NATO's bombing of Serbia in 1999 over the Kosovo conflict, and also resent his lobbying for Bosnian Muslims in their 1992-5 fight against Bosnian Serbs. They opposed his visit, saying it amounted to a "humiliation'' of their country.
