Why hasn't Boris Johnson released the Russia report?

Parliament’s intelligence and security committee produced a report into alleged Russian interference in UK politics. It was supposed to be published before December’s election, but the UK prime minister withheld its release. Now, six months later it still hasn’t seen the light of day. The Guardian’s Luke Harding investigates what could be in it and says witness testimony from an ex-MI6 agent makes uncomfortable reading for the government. Help support our independent journalism at <a href="https://www.theguardian.com/infocus">theguardian.com/infocus</a>