While Russia scrambled to defend itself from its own paramilitary forces on Saturday, Ukrainian leaders said their own forces managed to make advancements in Russian-occupied territory. The Wagner Group, a Russian mercenary organization led by Yevgeny Prigozhin - a former ally of Russian President Vladimir Putin - marched across Russia on Saturday, coming within hours of Moscow. The BBC reported that Ukraine has made advances since launching its counter-offensive on June 4, including in the days and hours before the Wagner Group's apparently brief insurrection. While Ukraine continued its efforts to retake territory, Russia was forced to defend itself from itself. Before the Wagner Group fighters turned back, Russian security officials were gearing up to defend Moscow.