EDITORS PLEASE NOTE: REUTERS IS UNABLE TO INDEPENDENTLY VERIFY THE CONTENT OF THIS VIDEO, WHICH HAS BEEN OBTAINED FROM A SOCIAL MEDIA WEBSITE<br/> <br />This amateur video posted on a social media website... claims to show the aftermath of fighting in Damascus.<br/> <br />Reuters is unable to independently verify the content of this video... but opposition activists say President Bashar al-Assad's forces fought back rebel fighting in the Syrian capital on Friday.<br/> <br />Opposition activits said they are fighting Assad's forces in a struggle to break the stalemate in the city of two million people. Artillery and air strikes have stopped opposition fighters to the east from advancing.<br/> <br />Assad has been battling to crush a 22-month-long revolt.. that has left 60-thousand people dead. While he's lost control of large parts of his country, his forces, backed up by air power, have kept rebels away from the center of Damascus.