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Said Kouachi, left, and Cherif Kouachi are suspects in the Paris attack.
Said Kouachi, left, and Cherif Kouachi are suspects in the Paris attack.

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    Tracking the Kouachi brothers' time in Yemen

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Tracking the Kouachi brothers' time in Yemen

What do we know about the time that the Kouachi brothers spent in Yemen and who they may have coordinated with? CNN's Nick Paton Walsh reports.

Tracking the Kouachi brothers' time in Yemen

What do we know about the time that the Kouachi brothers spent in Yemen and who they may have coordinated with? CNN's Nick Paton Walsh reports.