NEW : At least 79 people killed Saturday , opposition group says . Rebels go after government military bases one by one in the north . Syrian troops cut off food , medicine and ammunition to rebels in Damascus . Al - Assad plans to give a speech on Sunday .
NEW : At least 79 people killed Saturday , opposition group says . Rebels go after government air bases one by one in the north . Syrian troops cut off food , medicine and ammunition to rebels in Damascus . Al-Assad plans to deliver a speech on Sunday .