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How terrorists exploit Europe's divided intelligence efforts

How terrorists exploit Europe's divided intelligence efforts

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News Wrap: Four EU countries to turn away economic migrants

News Wrap: Four EU countries to turn away economic migrants

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For young newcomers, a stepping stone to life in America

For young newcomers, a stepping stone to life in America

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France laments how Paris suspect slipped in undetected

France laments how Paris suspect slipped in undetected

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What’s made IS one of the richest terrorist armies ever?

What’s made IS one of the richest terrorist armies ever?

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Does the U.S. need tighter security checks on refugees?

Does the U.S. need tighter security checks on refugees?

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Shields and Brooks on how Paris changed the political debate

Shields and Brooks on how Paris changed the political debate

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70 years after Nazi liberation, poets write about freedom

70 years after Nazi liberation, poets write about freedom

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Debate over refugee crisis sharpens on the campaign trail

Debate over refugee crisis sharpens on the campaign trail

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Attacks move France to grant law enforcement more power

Attacks move France to grant law enforcement more power

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Why more and more women are drawn to the Islamic State

Why more and more women are drawn to the Islamic State

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Who was behind the Bamako hotel attack?

Who was behind the Bamako hotel attack?

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6:11
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PBS News Hour

FBI: Terrorists hiding behind impenetrable communication

How did the Paris terrorists communicate with each other and elude surveillance? Investigators are eyeing readily available cellphone technologies that defy cracking by intelligence agencies and even the companies that created them. Judy Woodruff takes a look at some of the encrypted apps and software being used to evade detection.
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