I've modified the Strategic SAM Network menu on the right of the page. You'll now see both the country name and the current as of date. For example, I just posted the North Korea feature, so you'll see North Korea (June 2010) in the menu. That will tell you if the feature has been published or updated recently. If you're looking for a more accurate picture and the feature hasn't been updated in a while, as is the case with China, Russia, and Taiwan, you should rely on what's in the SAM Site Overview .kml file. That will always remain relatively current as it is updated the first week of every month.