In stunning developments overnight, Yevgeny Prigozhin, the head of Russia's Wagner mercenary group, and his fighters crossed the border from Ukraine into Russia, entering the city of Rostov-on-Don claiming that his fighters controlled the city's military sites.

Hours later, Vladimir Putin, stated that the Wagner chief "betrayed" Russia out of "personal ambition".

To discuss, Anton is joined by Gabriel Gavin, Politico reporter covering Russia and the former Soviet Union