Navalny releases recording of call to his alleged poisoner

Russian opposition activist Alexei Navalny (Pavel Golovkin/AP)

Russian opposition leader Alexei Navalny has released a recording of a phone call he said he made to an alleged state security operative who revealed details of how the politician was supposedly poisoned.

Mr Navalny fell sick on August 20 during a domestic flight in Russia and was flown to Berlin while still in a coma for treatment two days later.