The Russian opposition leader and one of President Putin’s fiercest critics, Alexei Navalny is being treated at a hospital in Germany after a suspected poisoning.
Mr Navalny fell into a coma after drinking a cup of tea at an airport cafe which his supporters believe was laced with poison. Russian doctors initally said there were no traces of poison in his body.
Reeta Chakrabarti presents BBC News reporting by Berlin correspondent Jenny Hill.
