This is Aleppo where rebels are in a building by building battle with government forces --- both determined to control Syria's largest city.<br/> <br />The stakes here are even higher following the military's win in Qusair. Both Aleppo and the city of Deir Al Zoir came under heavy fire according to video posted to a social media website whose content Reuters cannot indepedently verify.<br/> <br />And in the capital, government warplanes pounded rebel strong holds -- just a day after the U.S. announced it would help arming opposition fighters.
