Explosions and firefights in Damascus

Amateur video out of Syria appears to show what rebel forces say is an attack on a government ammunition storage unit in Damascus.

The video, which can not be independently verified shows multiple mortar strikes on the facility, in a largely rebel-held district of Damascus.

More footage shows rebels in trenches in a relentless fight.

For the past two months, President Bashar -al Assad's forces have been on the offensive after a string of victories. They are trying to cement control of a belt of territory between Damascus and his stronghold on the Mediterranean coast.

The country's revolt began with peaceful protests more than two years ago, It has since descended into a civil was that activists say has killed more than 100,000 people.