Ukrainian President Volodymyr Zelensky revoked the citizenship of Odesa mayor Hennadiy Trukhanov on Tuesday, which Ukraine's security service said was due to Trukhanov also being a Russian citizen. Trukhanov denied having Russian citizenship and said he would take his case to court. Ukraine prohibits its citizens from holding Russian citizenship, and Trukhanov - mayor of Ukraine's biggest port city since 2014 - has been dogged by allegations of dual nationality throughout his political career. "I now have evidence that I could not, either physically or legally, obtain Russian citizenship or passports," Trukhanov told public broadcaster Suspilne. Ukraine's SBU security service said the decision to strip Trukhanov's citizenship had been made thanks to evidence it had provided that Trukhanov had a...