Fighters of Wagner private mercenary group pull out of the headquarters of the Southern Military District to return to base, in the city of Rostov-on-Don, Russia - Photo: Reuters

Fighters of Wagner private mercenary group pull out of the headquarters of the Southern Military District to return to base, in the city of Rostov-on-Don, Russia - Photo: Reuters

Fighters of Wagner private mercenary group pull out of the headquarters of the Southern Military District to return to base, in the city of Rostov-on-Don, Russia - Photo: Reuters

Fighters of Wagner private mercenary group pull out of the headquarters of the Southern Military District to return to base, in the city of Rostov-on-Don, Russia - Photo: Reuters

Fighters of Wagner private mercenary group stand on a tank outside a local circus near the headquarters of the Southern Military District in the city of Rostov-on-Don, Russia - Photo: Reuters

Fighters of Wagner private mercenary group are seen atop of a tank while being deployed near the headquarters of the Southern Military District in the city of Rostov-on-Don, Russia - Photo: Reuters