A Syrian human rights group is reporting that at least seven people were killed in a car bomb that exploded today in Damascus. Syrian state news outlets also confirmed the attack.

The BBC noted that the Tadamon district where the explosion occurred has been the scene of some of the heaviest fighting between rebels and government forces. Earlier this month Sky News described fighting in the area as “urban warfare at its worst.”

Opposition fighters who spoke to the outlet blasted the assumption that chemical weapons were central to discussions of the Bashar al-Assad regime’s atrocities:

One soldier tells me President Barack Obama’s red line does not make sense – it’s not chemical weapons destroying Syria, but old fashioned AK-47s. “The reality is conventional weapons killed hundreds of thousands and made many millions of refugees. Nobody talks about that – only the use of chemicals,” he says.

Inside the apartment blocks where families used to live, President Bashar al-Assad’s soldiers take up new positions. This is urban warfare at its worst.

[Picture: Syria / YouTube]