ISLAMABAD (Reuters) – Street fighting erupted in the  main town of Pakistan’s Swat valley yesterday as security  forces mounted a new phase of their offensive against Taliban  militants, the military said.

The battle for control of Mingora is crucial to the success  of the offensive launched this month to regain control of the  Swat valley and stem a spreading Taliban insurgency.

“Street fighting has begun in Mingora,” military spokesman  Major General Athar Abbas told a news conference.

He said government forces had cleared parts of the town but  fierce clashes were underway in the centre of Mingora, and 17  militants had been killed yesterday.
The operation would be slow as security forces wanted to  avoid civilian casualties, he said, although most residents had  moved out and only five to 10 percent were still in the town. He  feared militants could use civilians as “human shields”.
“The pace of the operation will be painfully slow. So be  patient but the operation has started and inshallah (God  willing) we are going to take it to a logical conclusion.”

About 15,000 security forces are taking part in the Swat   offensive, which followed intense U.S. pressure on Pakistan to  tackle Taliban militants.
Pakistan says more than 1,000 militants and more than 50  soldiers have been killed in the fighting. There has been no  independent confirmation of those estimates.

Abbas said around 1,500 to 2,000 “hardcore” militants were  believed to be involved in fighting in Swat as a large number of  criminals who had joined the Taliban had fled the region.

More turmoil ahead
While Pakistan’s government and military have vowed to quell  the insurgency in Swat, the country could face greater turmoil  in the months ahead.
Admiral Mike Mullen, chairman of the Joint Chiefs of Staff,  has said a US military offensive in southern Afghanistan could  push Taliban fighters into Pakistan.
The United States is pouring thousands of extra troops into  Afghanistan this year to try to reverse gains by the Taliban.

Pakistani military officials say forces have secured several  parts of Swat, including two Taliban strongholds, as well as  much of the neighbouring strategic valley of Buner, around 100  km (60 miles) from the capital Islamabad.

Officials say tribesmen in other districts of the region  were raising militias, known as “lashkars”, to prevent militants  from expanding their influence into their areas.
Pakistan’s major political parties have generally supported  the Swat offensive, helped by public resentment against Taliban.

But analysts have said the backing could evaporate if many  civilians are killed or if people who have fled the fighting are  not given enough help.
Nearly 1.7 million people have been displaced by the Swat  offensive while about 555,000 people had been forced from their  homes by earlier fighting in the region.