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Law enforcement officials work following an explosion near New York's Times Square on Monday, Dec. 11, 2017. Police said a man with a pipe bomb strapped to his body set off the crude device in a passageway under 42nd Street between Seventh and Eighth Avenues. (AP Photo/Andres Kudacki)
Law enforcement officials work following an explosion near New York's Times Square on Monday, Dec. 11, 2017. Police said a man with a pipe bomb strapped to his body set off the crude device in a passageway under 42nd Street between Seventh and Eighth Avenues. (AP Photo/Andres Kudacki)

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NYC attacks demonstrate ISIS threat to US

CNN Justice correspondent Jessica Schneider on national security concerns during the holidays and what can be learned from the latest attack in New York.

NYC attacks demonstrate ISIS threat to US

CNN Justice correspondent Jessica Schneider on national security concerns during the holidays and what can be learned from the latest attack in New York.