I think this has to do with Viktor Shokin criminal probe of Joe Biden then Burisma  and to Soros hopefully "former Ukrainian Prosecutor General Viktor Shokin has filed a complaint with Ukraine’s National Bureau of Investigation this week demanding an investigation be launched against  Joe Biden, who successfully pressured the Ukrainian government to fire him and protect Burisma Holdings, the company his son Hunter sat on the board of, making $83,000/month, despite having no experience related to their business." https://pjmedia.com/trending/fired-ukrainian-prosecutor-says-joe-biden-abused-his-power-files-federal-complaint-against-him/