NEW YORK — “Navalny,” a look at a Russian opposition leader following an attempt on his life, on Sunday night won the Oscar for best documentary feature.

Director Daniel Roher’s portrait of Kremlin critic Alexei Navalny has shadowy operatives, truth-seeking journalists, conspiracy theories and Soviet-era poisons. It is a film with obvious political poignance following the Russian invasion of Ukraine.

Navalny is a media savvy, anti-corruption campaigner in his mid-40s who has for many years been a headache for Russian President Vladimir Putin. He’s released numerous reports about corruption in Russia and the Putin administration and become a popular and rallying figure among like-minded Russians.