Alexei Navalny: Two hours that saved Russian opposition leader's life

Russian opposition leader Alexei Navalny is in a coma in a Berlin hospital, and Germany has revealed he was poisoned by a Novichok nerve agent.
He was taken ill on board a return flight from Siberia to Moscow and the plane made an emergency landing in Omsk. Two days later Russian officials were persuaded to let him be airlifted to Germany.
BBC Russian has pieced together the story of how flight attendants and medics fought to save his life over the skies of Siberia. This is the dramatic two-hour timeline of that perilous journey.