Nationalist Serbian lawmakers booed the European Union's top diplomat Federica Mogherini on Friday as she addressed their parliament during tour aimed at addressing concerns about rising tensions in the Balkans.
Mogherini's trip to all six Western Balkans states, still scarred by wars fought in 1990s along political, ethnic and religious lines, is meant to lay the groundwork for an EU foreign ministers meeting on Monday and a summit on Thursday.
Several EU leaders have expressed alarm at a variety of problems there and some blame Russia for seeking to destabilize the region, EU officials say.
At Mogherini's speech to the Serbian parliament, members of the Serbian Radical party chanted: "Serbia! Russia! We don't need the [European] Union!"
Four deputies from the nationalist Dveri party held banners reading: "Serbia does not trust Brussels."