Petrov told Newsweek that if Wagner isn't successful in Ukraine, the group "is likely to destabilize the domestic situation in Russia and spark a civil war."
"Its founder and new warlord, Yevgeny Prigozhin, has been touring the Russian prisons—pardoning, recruiting and arming convicted criminals," he added. "They already rival the Russian regular army and even have their air force."
https://www.newsweek.com/they-bet-ukraine-defeating-russia-here-are-their-latest-war-predictions-1779617