"The DoD released the 2008 National Defense Strategy today. The strategy outlines the national approach to the defense of this nation and its interests.
The NDS is issued periodically and the last one was published in March 2005. It outlines how the Department supports the President's National Security Strategy and informs the National Military Strategy and other subordinate strategy documents. The strategy builds on lessons learned and insights from previous operations and strategic reviews such as the 2006 QDR. "
http://www.defenselink.mil/news/2008 National Defense Strategy.pdf