But did the coup really fail? Prigozhin simply called it off after !another! country negotiated a solution. The coup in Turkey failed because of, seemingly, Erdogan being too powerful and the people loving him. In Russia it failed because of Lukashenko intervening and Prigozhin calling it off. Putin does not look strong currently.
The whole thing reeks of a fake operation now that Lukashenko was the solution AND Biden making a statement that US isn't involved. Neither states are trustworthy narrators. Who knows