Factbox-What are Russia's new charges against jailed Putin foe Navalny?

FILE PHOTO: Russian opposition leader Alexei Navalny is seen on a screen via video link from a penal colony in the Vladimir Region during a hearing at the Basmanny district court in Moscow, Russia April 26, 2023. REUTERS/Yulia Morozova/File Photo

(Reuters) - Russian state prosecutors have asked a court to sentence jailed opposition politician Alexei Navalny to a further 20 years in a penal colony on various criminal charges including extremism, with a verdict expected on Friday.

Navalny, President Vladimir Putin's fiercest and most vocal domestic opponent, is already serving sentences totalling 11-1/2 years on fraud and other charges, which he says were trumped up to silence him.