By Peter Graff
TRIPOLI (Reuters) - NATO bombing of Tripoli paused Wednesday morning after some of the heaviest bombardments of the Libyan capital since air strikes began in March, but rebels said Muammar Gaddafi's army continued to shell their positions.
A Reuters reporter in Tripoli said no further explosions were heard after about 2 a.m. (1 a.m. British time). Loud blasts had been shaking Tripoli throughout Tuesday and into Wednesday morning, with warplanes hitting the city several times an hour.
NATO defence ministers met in Brussels Wednesday, but there were few signs of willingness to intensify their Libya mission, which has so far failed to oust Gaddafi.
The alliance says the bombing aims to protect civilians from the Libyan leader's military, which crushed popular protests against his rule in February, leaving many dead.
But with officials like British Foreign Secretary William Hague talking explicitly of Gaddafi being forced out, critics say NATO has gone beyond its U.N. mandate to protect civilians.
Western powers are lining up behind the rebels. Spain on Wednesday said it had recognized their National Transitional Council as the country's only representative.
"I'm here today to confirm that the National Transitional Council is the only legitimate representative of the Libyan people," Spanish Foreign Minister Trinidad Jimenez told reporters in the eastern Libyan city of Benghazi Wednesday.
Rebel spokesman Abdulrahman told Reuters from Zintan that pro-Gaddafi forces had shelled the western town on Wednesday morning, after massing large numbers of troops towards it.
"Gaddafi forces bombarded Zintan with Grad rockets. They fired around 15 rockets," he said. "They are now using anti-aircraft weapons. I can hear explosions."
Gaddafi's troops and the rebels have been deadlocked for weeks, with neither side able to hold territory on a road between Ajdabiyah in the east, which Gaddafi's forces shelled on Monday, and the Gaddafi-held oil town of Brega further west.
Rebels control the east of Libya, the western city of Misrata and the range of western mountains near the border with Tunisia. They have been unable to advance on the capital against Gaddafi's better-equipped forces.
NATO SEEKS MORE SUPPORT
NATO sought broader support for the Western bombing campaign in Libya Wednesday, given that the alliance's air power has been stretched by the latest strikes on Tripoli.
"We want to see increased urgency in some quarters in terms of Libya," NATO Secretary-General Anders Fogh Rasmussen said.
But as NATO defence ministers met in Brussels to discuss the Libyan campaign, some allies that have not taken part in the bombing said they would not alter their stance, and Sweden, a non-NATO participant, said it would scale down its role.
Of the 28 NATO allies, only eight, led by Britain and France, have been conducting air strikes on Gaddafi's forces, and a senior U.S. official warned this week that while there were no risks to the mission as yet, fatigue was beginning to set in among the aircrews already committed.
NATO allies agree Gaddafi must go, but not all view military intervention as the best way to achieve this.
Germany, which opposed the Libyan intervention, said it understood the pressures on Britain and France but would not change its position. Spain said it would not join the mission, despite now recognising the rebels as Libya's representatives.
"Germany sticks to its position -- no military engagement," German Deputy Defence Minister Christian Schmidt told reporters.
GADDAFI DIGS IN
As bombs fell late Tuesday, Gaddafi vowed to fight to the end, after strikes on his Bab al-Aziziya compound.
"We only have one choice: we will stay in our land dead or alive," he said in a fiery audio address on state television.
Gaddafi says the rebels are a minority of Islamist militants and the NATO campaign is an attempt to grab Libya's oil.
U.S. President Barack Obama said it was "just a matter of time before Gaddafi goes."
Gaddafi's forces pulled back to high ground in the Western Mountains outside Yafran, 130 km (80 miles) southwest of Tripoli. The rebels broke a government siege of it Monday.
Diplomatic overtures are being made to the rebels by world powers, even Russia and China, despite their misgivings about interference in Libya's sovereign affairs.
A Russian special envoy for Africa said in the rebel capital of Benghazi Tuesday that Gaddafi could no longer represent Libya and that Russia was ready to help in any way possible.
The Chinese Foreign Ministry said an Egypt-based Chinese diplomat had visited Benghazi to talk with the rebels.
The Libya contact group of Western and Arab countries agreed in May to provide millions of dollars in non-military aid to help the rebels keep services and the economy running.
They meet again Thursday in the United Arab Emirates.
(Additional reporting by David Brunnstrom in Brussels, Sherine El Madany in Benghazi and Hamid Ould Ahmed in Algiers; Writing by Tim Cocks and John Irish; editing by Mark Heinrich)
