Cyber war...Are we at war? And if we are, how should we fight it?

It appears that no contemporary issue is more discussed and less understood than "cyber war."  Former Director of National Intelligence Mike McConnell says that the war is underway.  Howard Schmidt, White House Cybersecurity Coordinator suggests that the concept is misplaced.  Are we at war?  And, if we are, how should we fight it?  If we aren't, how should we prevent it?  And, why does this subject seem so hard to discuss and to understand?  

 - General (Ret.) Michael V. Hayden, former Director, National Security Agency and Central Intelligence Agency

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