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An injured woman leaves the scene at Brussels airport after explosions rocked the facility Tuesday morning.
An injured woman leaves the scene at Brussels airport after explosions rocked the facility Tuesday morning.

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    The vulnerability of 'soft targets' to terror

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The vulnerability of 'soft targets' to terror

CNN Justice Reporter Evan Perez explains what a "soft target" is and why it is so vulnerable to terrorism.

The vulnerability of 'soft targets' to terror

CNN Justice Reporter Evan Perez explains what a "soft target" is and why it is so vulnerable to terrorism.