Quoting from the article Radical Serbia speaker steps down (source: The Beeb, emphasis mine):

Earlier, opposition MP Nenad Canak said Mr Nikolic's nationalist and anti-European stand no longer had a place - especially as Serbia had just won the Eurovision Song Contest.

Mr Canak said Serbia's neighbours had all awarded his country maximum points in the contest. But Russia, described by Mr Nikolic as Serbia's only friend, had only awarded his country five points.

Clearly, five points are not enough to prove friendship, don't you see?