The latest research into the link between germs and mental illness -- and what we all need to know.
Diane and her guests talk about whether U.S. intelligence agencies should have done more with information about terrorist plans before September 11th, and how such information should be handled today.
- Skip Brandon former deputy assistant for international terrorism with the FBI
- Vincent Cannistraro former CIA senior intelligence official in charge of counterterrorism operations and analysis
- Michael O'Hanlon senior fellow, foreign policy studies, the Brookings Institution.
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