government supporters cheering in the streets today, but there are now unconfirmed reports that rebels have retaken the main square there. after days of heavy fighting, it's almost impossible to get through to anyone in zawiya for any independent confirmation of what's going on there. today gadhafi is also sending a new warning to the united states and its allies as they consider imposing a no-fly zone over libya. he promises that all libyans will fight back against what he calls an act of aggression and an attempt to control libya's oil. >> translator: it will be clear aggression. it will also be clear that the intentions are to control libya's oil, choke libya's liberty, land and people. all of the libyans carry weapons so they will fight back. >> let's bring in our senior international correspondent nic robertson in tripoli. i know that you had a ride, you were going out to zawiya with some libyan government officials. what happened?