Syrian news agency picture of former Prime Minister Riad Hijab (L) being sworn in on 26 June in front of President Assad
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Syria 'crumbling' after PM's defection

Western powers have said the defection of Syrian Prime Minister Riad Hijab is a sign that the regime of President Bashar al-Assad is crumbling.

Mr Hijab, the most senior Syrian figure to defect, on Monday denounced Syria's "terrorist regime" and said he was joining the revolution.

Susana Mendonca reports.

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