A blogger in Russia, Semyon Pegov, has called the anti-government rebellion in Ukraine “a stab in the back” of Russian President Vladimir Putin’s ally Yevgeny Prigozhin, Eto Buziashvili wrote. Pegov was involved in a video interview with Prigozhin last year that was “full of compliments”, Buziashvili said. Pegov had urged Prigozhin to take a prominent…