Russian opposition leader and President Vladimir Putin critic, Alexei Navalny who is currently in prison, is in failing health and “critical” condition over suspected poisoning, a close ally told the United Kingdom-based newspaper The Guardian, on Friday (April 14).

Jailed Russian opposition leader Alexei Navalny possibly poisoned, in ‘critical’ situation: Spokespeople

The United States and European allies have already imposed sanctions on Russian targets over what they concluded was a state-backed poisoning attempt against Navalny

US urges Russia to "Immediately" allow doctors for Alexei Navalny

Russia says that jailed opposition leader Alexei Navalny's health is fine. But Navalny's doctors say he could die at any moment. Now, allies of Navalny have called for nationwide demonstrations. WION's Palki Sharma tells you more.

Gravitas: Alexei Navalny 'could die any minute'

Top Russian opposition leader Alexei Navalny on Wednesday announced that he has gone on a hunger strike until he gets proper medical help to treat his severe back pain and numbness in his legs.

Navalny begins hunger strike until he receives proper medical attention

Russia's top opposition leader Alexei Navalny's lawyers and ally on Wednesday expressed concerns over his deteriorating health in prison, saying he is experiencing leg numbness and back pain.

Alexei Navalny's health deteriorating in prison, claim his lawyers