Ashton B. Carter, co-director of the Preventive Defense Project at Harvard University, said the likelihood of a nuclear attack on U.S. soil is undetermined, but it has increased with the proliferation of weapons by Iran and North Korea and the failure to secure Russia's nuclear arsenal following the Cold War.

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Ashton B. Carter, co-director of the Preventive Defense Project at Harvard University, said the likelihood of a nuclear attack on U.S. soil is undetermined, but it has increased with the proliferation of weapons by Iran and North Korea and the failure to secure Russia's nuclear arsenal following the Cold War.

Authors Website: http://sheilastuff.blogspot.com

Authors Bio:

Sheila Samples is an Oklahoma writer and a former civilian US Army Public Information Officer. She is a Managing Editor for OpEd News, and a regular contributor for a variety of Internet sites.