After discussions with the Royal Green Jackets about the abuse of Google Earth by terrorist groups, they have modified the imagery of British bases in Basra. It appears that Google Earth was being used to plan and pinpoint attacks against British bases -- something I'm sure Google isn't thrilled about.
Ogle Earth reports that the imagery appears to have been replaced with an older version to help conceal the locations of vulnerable areas.
"I went looking for the Shatt al Arab Hotel mentioned in the article, and found it, but saw no tents or tanks. Even stranger, Google Earth Community placemarks for Basra alluding to craters and tanks instead show remarkably intact buildings and roads."