whether it would be over by the end of the year so we are hoping for more details as the day progresses but i think it's hard to ascertain how long this campaign might continue, zain. >> cnn diana magnay reporting, thanks, diana. another look at how the rebels advanced. operation held areas are here marked in yellow. areas under control are marked in green. on friday the rebels were in control of benghazi. colonel gadhafi was in charge of tripoli, raz, sirte and ajdabiya but then anti-gadhafi forces took back control of ajdabiya, ras lanuf and al brega. rebels gained control of those two cities at the start of the civil war but quickly lost them to government forces. the libyan government says coalition attacks are killing innocent civilians.