Once again, the US are doing themselves few favours with their hysterical and hypocritical response to the WikiLeaks revelations. If they genuinely fear that lives are being put at risk, they'd be better advised to focus their fire on the disclosure of specific documents, and explain the cause for concern in each case. The blanket condemnation just looks like sophistry - few are going to seriously believe that it isn't in the public interest to know, for instance, that the US have been spying on UN officials (presumably in contravention of international law), or that they've been indulging in petty intelligence-gathering on the private life of a government minister in a country that is supposedly their closest ally. As with the previous leaks, the fascination lies in discovering the distance between the values the US publicly espouses, and the true values betrayed by the actions and words they imagined would be kept secret.
And the US "national interest"? Why on earth should it be the primary concern of foreign or international media to protect that?