Syria's opposition have made a chilling pledge to the country's leader. They have vowed President Bashar Al Assad and his family will be killed like Libyan leader Colonel Gaddafi, saying he's lost the chance of a peaceful exit. Fierce battles between government forces and rebel fighters are raging on the outskirts of the capital Damascus. RT's Sara Firth is in the city now.<br /><br />RT on Twitter http://twitter.com/RT_com <br />RT on Facebook http://www.facebook.com/RTnews
