Is Nicola Sturgeon seriously trying to tell us that this is not a cover-up when, six weeks before key documents were finally dragged out of the Government, her own officials warned that it would look like a failed attempt at a cover-up; when her own lawyers, under her instruction, made false statements before a judge because a key email was withheld, despite emails around it in the same chain having been disclosed; and when all this would have stayed secret from the inquiry that is investigating it, but for the threat of John Swinney losing his job? Ruth Davidson gets...