White House says Biden spoke with leaders of France, Germany and UK amid developments in Russia

US and Western officials caught off guard by Prigozhin's escalation in Russia

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Wagner chief turns on Putin and takes over military facilities in two Russian cities

Who is Yevgeny Prigozhin, the Wagner chief turned rebel?

Yevgeny Prigozhin: From Putin's chef to rebel in chief

Wagner Chief Directly Challenges Putin as Russia Crisis Spirals

Putin is at risk of losing his iron grip on power. The next 24 hours are critical

Turmoil in Russia: reactions from foreign governments

Putin under pressure as ally Yevgeny Prigozhin turns rebel

What Is Russia’s Wagner Group and Why Is It Accused of Mutiny?