A less generous interpretation:
* Wikileaks leaked the video that accompanies a detailed transcript (with quotes) of the same video that appeared in the Washington Post many months beforehand --- a PR black eye to be sure, but in no way a revelation.
* Wikileaks has in fact cultivated confidential sources inside DoD and military service agencies that are talking about forwarding cables and other TS-classified material, and is in fact part of a grave threat to national security (which, true, the real "threat" is clearly the negligent lapses in operational security that allow someone like Manning to leak cables in the first place).
In other words: Wikileaks is less valuable to society than it seems, and at the same time the government has a legitimate (if misdirected) concern with them.