Is war becoming outdated?

http://www.truth-out.org/gates-warns-against-more-wars-like-iraq-and-afghanistan68092?utm_source=twitterfeed&utm_medium=twitter

“In my opinion, any future defense secretary who advises the president to again send a big American land army into Asia or into the Middle East or Africa should ‘have his head examined,’ as General MacArthur so delicately put it,” Mr. Gates told an assembly of Army cadets here.

It gives one pause to wonder whether, if the U.S. had left Iraq alone, it too might be on the current list of countries going through regime change.  One could also wonder if the trillions of dollars spent and thousands of lives lost was worth it.