Detailed text transcripts for TV channel - CNN - 20100806:21:58:00
>> reporter: film maker lucy walker has interviewed more than 100 nuclear arms experts and nuclear weapons are the greatest threat in the world because of proliferation to rogue nations, accidents and terrorist groups. >> deter rens doesn't work. terrorists don't have, you know, any way of being deterred. >> reporter: harvard and ucla professor has a ph.d. in nuclear engineering and consults regularly with the u.s. government on national security. he has seen walker's film. >> it's certainly true that terrorist organizations have been trying to get nuclear weapons. >> reporter: he agrees that ...
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