Heavy fighting raged Tuesday in the western Libyan city of Misrata, witnesses said, while a NATO commander complained the alliance was having trouble destroying Moammar Gadhafi's mortars and rockets attacking rebels there and Britain said it would send senior military officers to advise the opposition in the east.
A senior Libyan official, meanwhile, ruled out the possibility of allowing foreign troops to escort humanitarian aid convoys in Libya, saying the government would view such a deployment as a military mission.
Explosions and gunfire were heard in central Misrata, Libya's third-largest city, with clashes between government troops and rebels, said a resident who identified himself only by his given name, Abdel Salam, for fear of retaliation. The city has been besieged by government forces for more than a month.
NATO planes flew over Misrata while the shelling from Gadhafi forces continued, he said, adding that the only targets the alliance hit were radars and air defences north of the city on Monday night.
NATO Brig. Gen. Mark van Uhm said fighting has been intense in Misrata for the past 10 days, and he said his forces have destroyed more than 40 tanks and several armoured personnel carriers there.
"The situation on the ground is fluid there, with ground being won and lost by both sides," van Uhm said at NATO headquarters in Brussels, adding: "Gadhafi's forces have shelled Misrata indiscriminately."
But he cautioned that "there is a limit to what can be achieved by airpower to stop fighting in a city."
"We are doing everything to prevent civilian casualties by our own attacks (while) degrading (Gadhafi's) ability to sustain forces there," he said.
Adm. Giampaolo Di Paola, the chairman of the alliance's military committee, said in Rome that even though NATO operations have done "quite significant damage" to the Libyan regime's heavy weaponry, what Gadhafi has left is "still considerable."
Asked if more NATO air power and bombing are needed, Di Paola said any "significantly additional" allied contribution would be welcome.
Given NATO's humanitarian mandate reflecting the U.N. Security Council resolution on Libya, which does not allow ground forces, "it's very difficult" to stop the regime's firepower on Misrata, he said.