Lying awake at 2am last Wednesday and unable to sleep for the third night in a row, I listened as footsteps crunched up and down the gravel outside my ground-floor flat. For one alarming moment I thought the police were preparing to storm through my front door and arrest me. I looked out of the curtains – but no one was there. Paranoid? Hardly. A few hours later, Home Office Minister Nick Hurd stood in the House of Commons and refused to rule out deploying the 'full force of the state' to identify the person who leaked Sir Kim Darroch's embarrassingly undiplomatic cables about US...…Lying awake at 2am last Wednesday and unable to sleep for the third night in a row, I listened as footsteps crunched up and down the gravel outside my ground-floor flat. For one alarming moment I thought the police were preparing to storm through my front door and arrest me. I looked out of the curtains – but no one was there. Paranoid? Hardly. A few hours later, Home Office Minister Nick Hurd stood in the House of Commons and refused to rule out deploying the 'full force of the state' to identify the person who leaked Sir Kim Darroch's embarrassingly undiplomatic cables about US...WW…