Russian opposition politician Alexei Navalny is in a coma and on a ventilator in ICU in a hospital in Siberia after falling ill from suspected poisoning during a flight, his spokeswoman said on Thursday.
She believes poison was mixed into his tea.
Navalny is a staunch critic of President Vladimir Putin.
Last year, he was taken to hospital after another alleged poisoning, while he was serving a jail sentence for encouraging people to take part in a pro-democracy protest.
To discuss the latest updates, we speak to Aleksandra Stojanovich-Godfroid, a journalist who joins us on Skype from Moscow; later we speak to Dara Macdool, head of Europe and principal Russia analyst at Verisk Maplecroft, a global risk consultancy, who joins us from London.
