Serbia’s relationship with Russia could by strained by the recent death in prison of dissident Alexei Navalny, the country’s pro-Russian President Aleksandar Vučić told Serbian broadcaster Prva on Sunday. Vučić said he was “horrified” by the news of the death of the 47-year-old critic of President Vladimir Putin’s regime, which was announced by Russian state media on Friday and confirmed by Navalny’s team on Saturday. It was the first time that the Serbian president, who was criticized by the media for not applauding Navalny’s widow, Yulia Navalnaya, after her speech at the Munich Security Con…