That is a truly bizarre but probably not unexpected turn of events. Prigozhin has been complaining for months about how his troops have been cannon fodder (even if he also treats them that way and finds them in the most desperate or incarcerated conditions - an army "no one will miss if they're gone." Russia plunges into crisis as Putin accuses Wagner chief of stoking "armed rebellion." Watch special coverage live on CNN

Russian President Vladimir Putin issues blunt warning 03:59
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Putin accuses Wagner chief of stoking 'armed rebellion'

These bullet points run to the side in the story linked:

Russian President Vladimir Putin has vowed to punish those behind an “armed uprising” after the head of the Wagner private military group launched an apparent insurrection, claimed control of military facilities in two Russian cities — Rostov-on-Don and Voronezh — and warned that his troops could head for Moscow.

Wagner chief Yevgeny Prigozhin has refused to surrender and called Putin "deeply mistaken" following the Russian president's address describing his actions as betrayal.

Prigozhin on Friday accused Russia's military leadership of killing a "huge amount" of his mercenary forces in a strike on a Wagner camp and vowed to retaliate. Russia’s Ministry of Defense denied Prigozhin’s claims.

Ukrainian President Volodymyr Zelensky says Russia's "weakness" has been exposed, with a Ukrainian defense spokesperson calling it a "sign of the collapse of the Putin regime."