From Patrick Radden Keefe, in the New Yorker: “The serialized revelations that have unfolded since Friday—when Petraeus, who left the military as a four-star general, resigned from the C.I.A. because of an affair—are, to say the least, honeyed with irony. In the decade following September 11, 2001, the national-security establishment in this country devised a surveillance apparatus of genuinely diabolical creativity—a cross-hatch of legal and technical innovations that (in theory, at any rate) could furnish law enforcement and intelligence with a high-definition early-warning system on potential terror events. What it’s delivered, instead, is the tawdry, dismaying, and wildly entertaining spectacle that ensues when the national-security establishment inadvertently turns that surveillance apparatus on itself.”