Nearly 8,000 mercenaries from the notorious Wagner Group have been deployed by Russia in Ukraine to boost Vladimir Putin's flagging invasion, but have suffered heavy casualties, British MPs have been told. Giving evidence to the Commons Foreign Affairs Committee, Christo Grozev, executive director of the Bellingcat investigative website, said 3,000 members of the private military company (PMC) were thought to have been killed on the battlefield. The shadowy group - which has been linked to a string of killings, rapes and war crimes around the world - is known as Putin's private army which carries out his dirty work at...