Prigozhin perceives growing resentment among Putin's fighters. He warns of a historic revolution that could not be prevented even by the Kremlin.

At the same time, there are growing signs that Russia may have underestimated Ukraine as an adversary. Ukraine is already working at full speed on the counteroffensive, adviser to the Ukrainian president's office says. "It is an intense war along a 1,500-kilometer border, but the action has begun," says Mykhailo Podolyak.