On Background  ·   August 27, 2013

Once the U.S. gets involved in Syria, when does it stop?

- Paul Danahar, author of "The New Middle East" and former BBC Middle East bureau chief, explains how the Obama administration's red line leaves it with no other option than to take action in Syria. ()

- Paul Danahar, author of "The New Middle East" and former BBC Middle East bureau chief, explains how the Obama administration's red line leaves it with no other option than to take action in Syria. ()

Once the U.S. gets involved in Syria, when does it stop? (1:27)

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