Has a new cold war begun?  Since the 1950s we have relied on deterrence to stop anyone from using nuclear weapons because the reaction would be so terrible.  And for 70 years it worked.  Now, we’re moving into a world where we need to consider what defending is going to mean for a nuclear or cyber-attack. Newt’s guest is Cliff May, Founder and President of the Foundation for Defense of Democracies. 

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