The Oscar for Best Documentary Feature was awarded on Sunday to the movie "Navalny", which tells of events related to the poisoning of the famous Russian dissident Alexei Navalny, who has been imprisoned for two years.

This investigative documentary, directed by Canadian Daniel Rohr, depicts the stages of Navalny's political rise, the assassination attempt that he survived, and his imprisonment at a later stage.

"And there is one person who could not be with us tonight: Russian opposition leader Alexei Navalny, who remains in solitary confinement for what he calls, and I quote correctly, Vladimir Putin's unfair war of aggression in Ukraine," Rohr said as he accepted the award.

Navalny has been in prison for more than two years, after he was arrested upon his return to Russia after he was subjected to a serious poisoning operation, which he accuses the Kremlin opposition of masterminding.

He was sentenced in March last year to nine years in prison on "fraud" charges that Navalny considers fabricated.

"My husband is in prison just because he told the truth," said the dissident's wife, Yulia, on Sunday. "My husband is in prison just because he defends democracy."

The documentary "Navalny", produced by "HBO Max" and "CNN Films", premiered on January 25, 2022 at the Sundance Film Festival.

The work won the Best Documentary Award in February 2023 at the British BAFTA Film Awards in London.