Tripoli, Libya (CNN) -- Opposition forces in the rebel-held city of Benghazi called for massive demonstrations on Friday to show solidarity with like-minded Libyans in the capital, Tripoli, which remains under the control of leader Moammar Gadhafi. The developments came as the leaders of the United States, France and England delivered an editorial piece to European newspapers on their vision of Libya's future. Rebels have been under intense pressure from government forces in several cities. Gadhafi's troops pounded rebel positions in Misrata on Friday, firing mortar and artillery rounds into the strategic port city, while to the west, in Tripoli, aircraft could be heard circling the city.
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U.S., French and UK leaders write op-ed piece
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Rebels show more discipline, cohesion in Ajdabiya
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Misrata and other cities have been under siege for weeks
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Emir says "it's possible" rebels have received Qatari weapons
International delegates attending a meeting on @placeholder Thursday in Qatar again urged Gadhafi to step down immediately.