Recruitment surges for al Qaeda in Yemen

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    Recruitment surges for al Qaeda in Yemen

Al Qaeda is training a new generation of bomb makers. CNN's Nick Paton Walsh reports.

    The rise of Islamic State in Iraq and Syria (ISIS), the Islamist militant group that has seized a chunk of land stretching from northern Syria to central Iraq, has struck fear into the hearts of leaders around the world. CNN explains ISIS' roots, what it controls, and where its support comes from.