Poisoned Russian opposition leader Alexei Navalny is back on his feet — posting a photo of himself to Instagram showing him walking down the stairs.

“Let me tell how my recovery is going. It is already a clear path although a long one,” he wrote.

“There are many problems yet to be solved but amazing doctors from the Charite hospital have solved the main one,” an exuberant Navalny added. “They turned me from a ‘technically alive human being’ into someone who has high chances to become … a man who can quickly scroll Instagram and understands without thinking where to put his likes.”

Navalny, a fierce critic of Russian President Vladimir Putin, collapsed on a flight from Siberia to Moscow last month. After being flown to Germany to receive medical treatment, doctors concluded he had been poisoned with Novichok, a nerve agent developed by Soviet scientists.

The same agent has been linked to poisonings of other Putin critics, like Sergei and Yulia Skripal in Salisbury, England, in March 2018.

“He is one of the most effective, prominent and, frankly, dangerous political opponents of the Putin regime,” Vladimir Kara-Murza, a Russian journalist and opposition activist told the Sunday Times of London.

He is particularly popular with Russia’s perennially restive youth. YouTube videos of Navaly flying drones over the mansions of Russian oligarchs have gone viral — but have also put a target on his back.

The Navalny poisoning prompted international outcry, with U.S. Secretary of State Mike Pompeo condemning it and adding there was a “substantial chance” Russian officials were behind the attack.

“This attack contravenes the international norms prohibiting the use of such weapons. We call on Russia to bring those responsible for this abhorrent attack to justice,” Pompeo said in a tweet.

A water bottle collected from Navalny’s hotel room in the city of Tomsk was found to have been contaminated with the nerve agent. The evidence proved crucial in helping German military scientists make the final call about what had happened to the Russian opposition leader.

Russia has consistently denied any involvement and floated outlandish theories about what might have precipitated Navalny’s sudden illness — including that he might have a cocaine addiction.

Russian doctors who originally treated him said they could find no evidence of poisoning and suggested Navaly had been suffering from low blood sugar. They also attempted to prevent him from seeking treatment abroad.

Earlier this week the European Parliament passed a non-binding resolution demanding an investigation into Russia’s use of chemical weapons.

“The attempted assassination of Navalny was part of a systemic effort to silence dissident voices in Russia,” they said in a statement.