(Wall Street Journal) — Emboldened by a string of victories on the ground, Col. Moammar Gadhafi’s government dismissed the cease-fire offer issued earlier Friday by the rebel Interim National Transitional Council, while his forces continued to press attacks against the contested cities on the coast. Col. Gadhafi’s forces tried to make further inroads into Misrata, where they control a thoroughfare on the western flank, while rebels are holed up in the center and still have access to the port. A rebel leader in the city, who is also a medic, said tanks shelled suspected rebel positions and targeted food warehouses in the area. He said coalition planes fired on the tanks and prevented them from advancing into the city. Meanwhile Doctors Without Borders issued a statement on Friday warning of a dire humanitarian situation in Misrata and other areas in western Libya saying it has been denied access by the regime to these conflict zones.