A supporter of Vladimir Putin holds his picture in front of Belgrade's Saint Sava Church as people wait for his arrival with Serbian President on January 17, 2019. - Russian President Vladimir Putin on January 17, 2019 called for stability in the Balkans during a pageantry-filled visit to Serbia, a key Moscow ally in a tense region on Europe's edge. Although Serbia and all of its neighbours aspire to join the European Union, Belgrade has nurtured close ties with Russia, its historical "Orthodox big brother" whose people also share Slavic origins. (Photo by VLADIMIR ZIVOJINOVIC / AFP)