TRIPOLI- Western warplanes bombed Muammar Gaddafi's tanks and artillery in eastern Libya on Friday to try to break a battlefield stalemate and help rebels take the strategic town of Ajdabiyah.
While the African Union said it was planning to facilitate talks to help end war in the oil producing country, NATO said its no-fly zone operation could last three months, and France cautioned the conflict would not end soon.
In Washington, a U.S. military spokeswoman said the coalition fired 16 Tomahawk cruise missiles and flew 153 air sorties in the past 24 hours targeting Gaddafi's artillery, mechanized forces and command and control infrastructure.
Western governments hope the raids, launched on Saturday with the aim of protecting civilians, will shift the balance of power in favour of the Arab world's most violent popular revolt.
In Tripoli, residents reported another air raid just before dawn, hearing the roar of a warplane, followed by a distant explosion and bursts of anti-aircraft gunfire.
As the United States said Gaddafi's ability to command and sustain his forces was diminishing, Libyan state TV said the "brother leader" had promoted all members of his armed forces and police "for their heroic and courageous fight against the crusader, colonialist assault", without giving further details.
Rebels massing for an attack on the strategically important town of Ajdabiyah exchanged artillery fire with Gaddafi's forces.
Opposition forces on the road to Ajdabiyah seemed more organised than in recent days, when their disarray stirred doubts about their ability to challenge Gaddafi.
They had set up road blocks at regular intervals and Reuters counted at least four truck-based rocket launchers -- heavier weaponry than had been seen earlier this week.
Winning back Ajdabiyah would be the biggest victory for the eastern rebels since their initial push westwards went into reverse two weeks ago and the better equipped Gaddafi forces drove them back towards the rebel stronghold of Benghazi.
It would also signal that allied airstrikes may be capable of helping rebel fighters eventually topple Gaddafi.
NOT DAYS, WEEKS
At African Union headquarters in Addis Ababa, AU commission chairman Jean Ping said it was planning to facilitate peace talks in a process that should end with democratic elections.
It was the first statement by the AU, which had rejected any form of foreign intervention in the Libya crisis, since the U.N. Security Council imposed a no-fly zone last week and air strikes began on Libyan military targets.
But in Brussels, a NATO official said planning for NATO's operation assumed a mission lasting 90 days, although this could be extended or shortened as required.
France said the war could drag on for weeks.
"I doubt that it will be days," Admiral Edouard Guillaud, the head of French armed forces, told France Info radio. "I think it will be weeks. I hope it will not take months."
Guillaud said a French plane destroyed an army artillery battery near the eastern frontline town of Ajdabiyah, 150 km (90 miles) south of Benghazi. Ajdabiyah is important for both sides as it commands the coastal highway to the west.
In London, the Ministry of Defence said British Tornado aircraft had also been active there, firing missiles overnight at Libyan military vehicles threatening civilians.
Later in the afternoon, Western warplanes were again active over Ajdabiyah and a Reuters correspondent close to the town heard three large explosions and large plumes of black smoke rising above the eastern entrance to the town.
A rocket apparently fired from rebel positions then hit the eastern gate, sending a fireball into the sky.
"The eastern gate has fallen and we are sending a team to check before moving forward," rebel Colonel Hamad al-Hasi told Reuters near the town.
In the eastern rebel bastion of Benghazi, rebel spokesman Mustafa Gheriani said he expected Ajdabiyah to fall on Friday or Saturday following the overnight British and French strikes.
"This (the strikes) will weaken their forces and more importantly their morale," he said, adding the level of Western strikes was "sufficient. We feel safe under their protection".
Simon Brooks, head of the International Committee of the Red Cross operations in eastern Libya, reported big population movements from the Ajdabiyah area because of the fighting.
The ICRC was sending 700 tents to the area of Ajdabiyah to help displaced people, he said. In Ajdabiyah, the hospital "is obviously very close to where the fighting is going on. It is extremely difficult for people to get access to the hospital."
Officials and rebels said aid organisations were able to deliver some supplies to the western city of Misrata but were concerned because of government snipers in the city centre.
NATO said on Thursday after four days of tough negotiations that it would enforce the no-fly zone but stopped short of taking full command of U.N.-backed military operations to protect civilians from forces loyal to Gaddafi.
SUDAN SAID TO SUPPORT NO FLY ZONE
Differences over the scope the U.N. resolution gave for military action against Gaddafi's army led to days of heated arguments within NATO about its role in the operation.
The United States, embroiled in Iraq and Afghanistan, is keen to step back and play a supporting role in Libya in order to preserve alliance unity and maintain the support of Muslim countries for the U.N.-mandated intervention.
Despite the apparently cumbersome structure of the planned new command and Arab jitters on the use of force, the operation continues to receive support from beyond Western ranks.
The United Arab Emirates said it would send 12 planes to take part in operations to enforce the no-fly zone.
Qatar has already contributed two fighters and two military transport planes to help enforce the no-fly zone.
Western jets pounded targets in southern Libya on Thursday but failed to prevent government tanks re-entering Misrata, whose main hospital was besieged by government snipers.
In Tripoli, a Libyan energy official said on Thursday Libya was short of fuel and needs to import more, but a ship with fuel now bound for Tripoli may be stopped by Western forces.
Officials and hospital workers said civilians, including women, were among those killed in the latest Western air strikes in the Libyan capital. There was no way to independently verify the report.
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