What dramatic videos of Wagner march on Moscow reveal about rebellion - and what's now expected to happen

Emily Ferris, research fellow at defence thinktank RUSI, said the high number of videos from the weekend was notable given how tightly controlled information about the war is within Russia. She told Sky News: "Most of the information we're relying on has been from the Ukrainian side, which means the overall picture we have about the war is quite skewed. "We've got very little understanding of, say, Russian military morale, Russian public opinion. We are in the dark about a lot of those questions."