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Treasure Secretary Jack Lew explains and defends evolving policies.
Unlocking smartphones could be a nice money-maker for encryption companies.
A look at the advantages and pitfalls of Facebook's 'Safety Check' feature.
Nearly 10,000 additional security forces already protect major tourist sites, synagogues and government buildings in France.
Belgium has largely been on its own in responding to terror threats.
A new study documents the potential role of AI technology and biometrics in fighting terrorism.
Peter Bergen discusses his new book
U.S., UN hold summit on terror financing.
Kai Ryssdal talks with Marketplace's Stephen Beard, who reports from Paris.
Paris returns to some degree of normalcy, but locals are still shaken.
