At eight-thirty on the morning of June 21st, Alan Rusbridger, the unflappable editor of the Guardian, Britain’s liberal daily, was in his office, absorbing a lecture from Jeremy Hey-wood, the Cabinet Secretary to Prime Minister David Cameron. Accompanying Heywood was Craig Oliver, Cameron’s director of communications. The deputy editor, Paul Johnson, joined them in Rusbridger’s office, overlooking the Regent’s Canal, which runs behind King’s Cross station, in North London. According to Rusbridger, Heywood told him, in a steely voice, “The Prime Minister, the Deputy Prime Minister, the Foreign Secretary, the Attorney General, and others in government are extremely concerned about what you’re doing.”
Since June 5th, the Guardian had been publishing top-secret digital files provided by Edward Snowden, a former contract employee of the National Security Agency. In a series…