In his first post-election interview, Barack Obama told CBS's "60 Minutes" why national security will be among his top priorities during this transitional time and in the early months of his presidency. Prof. Joseph King explains why this is essential for the safety of the country. "It's reassuring to see that he has taken national security as a serious issue and understands that in this period of flux our enemies could take it as an opening." Prof. King also weighs in on the new administration's pick for the head of the Homeland Security Department, Arizona Gov. Janet Napolitano.

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