The source, who has proved reliable in the past, said Wagner chief Dmitry Prigozhin had fewer than 25,000 men at his disposal in total, and that around 5,000 of them were in Rostov-on-Don, the southern city key to Russia's war in Ukraine that Prigozhin said he had taken control of.
The source said Wagner's plan for Moscow was to take up positions in a densely built-up area.
