and the same is going on with the areas in and around zowiya. strikes quite helpful to the rebels. we know that was the case in mizrata and ben ghazi and quite a few other cities. without that help there's a lot of questions as to whether or not these rebels can become strong enough to actually hold these cities and push forward towards tripoli where gadhafi has the most fire power and has the most support. >> matthew, in tripoli, if the opposition forces were able to take full control of zowiya, how big a setback would that be for the gadhafi regime? what would it mean? >> i think it would be a devastating setback for a number of reasons. it's the main supply route to the west. that means tripoli would have to go without food stuffs, fuel splice and things like that. there's also an oil refinery in zowiya, one of the two that is controlled by the gadhafi regime at the moment. it would have a big impact if that's lost to the rebels. they'd be short of gasoline for their military efforts. but more than anything else it would be the enormous psych