At the height of Russia’s first, covert invasion of eastern Ukraine, in summer 2014, a group of senior Russian officials gathered at the defence ministry’s headquarters, an imposing Stalin-era building on the banks of the Moskva River.
They were there to meet Yevgeny Prigozhin, a middle-aged man with a shaven head and a coarse tone whom many in the room knew only as the person responsible for army catering contracts.