Russian opposition leader Alexei Navalny died Friday at the Arctic prison colony where he was serving a 19-year-term, Russia's federal penitentiary service said.
NATO chief Jens Stoltenberg said Friday there were "serious questions" for the Kremlin to answer over the death of jailed Russian opposition leader Alexei Navalny.
Russian opposition leader Alexei Navalny, who died Friday at the Arctic prison colony where he was serving a 19-year-term, is the latest critic to fall foul of President Vladimir Putin.
"This is terrible news. As the fiercest advocate for Russian democracy, Alexei Navalny demonstrated incredible courage throughout his life", said Rishi Sunak on X (Formerly Twitter).