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Determining what makes a threat credible
Author and former executive director of school safety for NYC schools, Gregory Thomas, discusses the difference between "making a threat" and "posing a threat” as these terms relate to a bomb threat that cause the closure of Los Angeles public schools on Tuesday.
National Security on msnbc
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Fmr. CIA Dir.: Trump child separation a 'national security' issue07:24
NYT: Trump's Pentagon quietly ramps up fight against cyberattacks04:14
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Wehner: It will get worse when Mueller report comes out10:19