Detailed text transcripts for TV channel - CNN - 20170917:03:37:00
>> the bureau of diplomatic security is the law enforcement arm of the state department. one of our main functions is we run security at embassies, foreign minister of a country comes in we'd be responsible for that. i work more hand in hand with the fbi. that's my sole purpose is to help them with state department indicates or thaftion thinforma they may need from the state department. >> robert booth was a diplomat and he had the historical information that we may need. >> i was approached in my office by the fbi liaison officer who explained to me that had an unsub espionage case and they t...
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