Ukraine's Volodymyr Zelensky, Germany's Olaf Scholz, and NATO's Jens Stoltenberg react to the news of Russian opposition leader Alexei Navalny's death in a Russian prison. Zelensky calls it "obvious" that Navalny was killed by the regime of President Vladimir Putin. Scholz praises his "courage", which he "paid for with his life". Stoltenberg calls Navalny a "strong voice" for freedom and democracy.