It’s been a tense couple of weeks for Yevgeny Prigozhin, the businessman and founder the of Wagner Group of mercenaries. Russian troops and Prigozhin’s mercenaries have been closing in on the strategic town of Bakhmut in eastern Ukraine, capturing territories around it. On 10 January, Prigozhin boasted that his forces had ‘taken control’ of Soledar, even as fighting continued inside the town and Ukraine disputed the claims.