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Is Syria's Bashar al-Assad really in charge?

4 September 2013 Last updated at 23:25 BST

John Simpson reports for BBC Newsnight on whether Syrian President Bashar al-Assad really is running the campaign against the opposition in Syria.

A US Senate panel has approved the use of military force in Syria, in response to an alleged chemical weapons attack on 21 August on the outskirts of Damascus.

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