Obama expected to expand Islamic State offensive into Syria

Aired: 9/10/2014 | 0:04:14 | Clip
Obama expected to expand Islamic State offensive into Syria Blurb: President Obama spent the last hours before his prime-time national address to rally congressional and overseas support for his plan against the Islamic State. The president is expected to lay out an expanded air campaign in Iraq and to add strikes in Syria. Gwen Ifill reports.

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