Demonstrators in the al-Tadamun area in Damascus on 15 July 2012
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Syria unrest: Second day of fierce Damascus clashes

Armoured personnel carriers have been deployed in areas of Damascus as fierce clashes rage for a second day, according to activists.

Witnesses say it appears to be the biggest military deployment in the Syrian capital in the 16-month uprising.

Meanwhile, Russia has said Western attempts to get Moscow to discuss UN-backed sanctions contained "elements of blackmail".

The BBC's Bridget Kendall reports.