First believed that this was 1 April joke, then I did read this on CIA website (they don’t joke around):

CIA is only one of the many US intelligence, diplomatic, and military organizations that use Intellipedia on top secret, secret, and unclassified networks. CIA.gov

It is a smart move of Google.com to work with trusted brands (land security is as seriously it can be). It put their brand/site Intellipedia strongly exactly at the weakest spot on Wikipedia.org (security, credibility and trust). This smart move will move the Google brand into the government market faster than it takes to find out that this was not a 1 April joke.