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tsr dnt brown lone wolves threat isis_00001912.jpg
tsr dnt brown lone wolves threat isis_00001912.jpg

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    'Lone wolves' a bigger threat than ISIS?

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'Lone wolves' a bigger threat than ISIS?

Some officials say so-called "lone wolves" are a more immediate threat to the U.S. than ISIS. CNN's Pamela Brown reports.

'Lone wolves' a bigger threat than ISIS?

Some officials say so-called "lone wolves" are a more immediate threat to the U.S. than ISIS. CNN's Pamela Brown reports.