(Blast) The latest in the battle for control of Aleppo, Syria's largest city.

Once a a tourist attraction and World Heritage site, Aleppo has become a battleground, in this latest video posted to a social media website.

Rebels, who are in control of much of the old city are reportedly trying to seize new positions. Everyone seems well aware of the message a rebel victory in the tradtionally pro-Assad city would send.

In a bid to beat back the latest uprising, President Bashar al Assad has ordered an additional 30,000 troops to Aleppo.