'Putin will be gone by 2023': Ex MI6 chief Sir Richard Dearlove says the Russian president will be sent to a sanatorium to receive medical treatment amid claims he is losing his grip on power due to his ailing health Putin to be moved into a sanatorium and out of power by 2023: Ex-MI6 boss Richard Dearlove, who was 'C' of MI6 until 2004 made the prediction on podcast Putin is rumoured to be stru..