Russia’s security service claims to have foiled Ukrainian assassination attempt against a high-ranking official

By Lex Harvey and Svitlana Vlasova, CNN (CNN) — Russia’s security service has claimed it foiled a plot by Ukraine to assassinate a high-ranking Kremlin official inside Russia as the alleged target visited a graveyard. The claim by Russia’s Federal Security Service – the FSB – came as residents of Kyiv experienced another heavy night