What about the transition between the more high-tech aproach to war before the "gwot" and the current focus on population-centric coin.

Or the fact that maybe military invasion/force might not be such a succesfull tool in some cases, and looking at the local circumstances a more effective aproach to countering irregular enemies can be found in a range of social, economic, informational, diplomatic ...etc aproaches. and off course if the circumstances favor a violence only aproach then winning "hearts and minds" is most likely a waste off time.