Ukraine war: Serbia uproar over Wagner mercenaries recruiting for Russia- PublishedA Russian news video claiming to show Serbian volunteers training to fight alongside Russian troops in Ukraine has prompted outrage in Serbia, exposing its complex relationship with Moscow.Cheap gas supplies, Gazprom's majority ownership of Serbia's oil company NIS and Russia's refusal to recognise Kosovo's independence were practical reasons to stay on good terms.Belgrade was not impressed when President Putin referred to Kosovo's unilateral declaration of independence as justification for recognising the independence of areas of occupied eastern Ukraine.He has been warning of "very difficult" conversations with EU and US special envoys - and says he will address Serbians over the weekend to tell them "what is required and expected from Serbia regarding Kosovo and sanctions against Russia".Mr Vucic has made similar remarks before - without ever committing to a major policy change."