PARIS (Reuters) - Kosovo's tennis federation has accused Serbia's Novak Djokovic of aggravating an already tense situation after the world number three wrote that Kosovo was "the heart of Serbia" on a camera lens following his first-round win at the French Open.
Some 30 NATO peacekeeping soldiers were injured on Monday in clashes with Serb protesters in the northern Kosovo town of Zvecan, where Djokovic's father grew up.
