BBC's Frank Gardner talks to Jim about the implications of the short-lived mutinous march on Moscow by the Wagner mercenaries who've been engaged in some of the fiercest fighting of the war in Ukraine.
Frank Gardner is the BBC's Security Correspondent and the author of best-selling books about his assignments.
Russian President Vladimir Putin, left and Yevgeny Prigozhin, head of the Wagner mercenary group. Photo: AFP / Sputnik
