A bomb has exploded in the Syrian state TV station, wounding three people. The attack caused some damage but the station continued broadcasting. An investigation is under way to find out who planted the bomb inside the building.

This footage shows dozens of people wandering around covered in dust and debris. Ceilings and walls are missing with cables everywhere. This colleague is helping an injured man covered in blood. A picture of Assad remains undamaged on the wall.

Meanwhile as the heavy fighting continues in Damascus, this unverified footage shows the rebels fighting just outside Aleppo. Both sides have claimed to have control of Salaheddine, a gateway into Aleppo the city of 2.5 million people and the main focus of fighting in the past week. A senior government security member told the BBC "the battle for Aleppo has not yet begun, and what is happening now is just the appetizer... the main course will come later.

In response the Foreign Secretary William Hague has pledged support saying "We will of course step up our humanitarian help, but also our practical help to the opposition who are in such a desperate situation."

Written and presented by Ann Salter