Battles rage throughout Syria

Airstrikes in Homs.

Amateur video which could not be independently verified by Reuters shows the ongoing air campaign by government forces in Syria.

Those who have been left behind try to to get out while they can.

Outside Aleppo rebels launch rockets in an effort to strip the regime of its airpower.

The video, obtained by Reuters, comes as rebels try to take control of a military airbase.

. (SOUNDBITE) (Arabic) REBEL GROUP LEADER ABO AHMED SAYING:

"We have surrounded the airport for one month -- but not completely, and for the last ten days it has been under siege."

After six months of advances, rebels now control wide areas of northern and eastern Syria.

They battle for control in a conflict that has already cost at least 60,000 lives.