In Pakistan, about 22,000 people have fled fierce fighting between troops and militants in the tribal region of Mohmand on the border with Afghanistan. Authorities say, many of the displaced are sheltering in temporary camps. According to residents, troops have been using helicopter gunships and heavy weapons to pound suspected militant positions for a week. The region has long served as a sanctuary for the Taliban and al-Qaeda. Pakistani officials say the army has sustained an unspecified number of casualties and more than 70 insurgents have been killed in the fighting so far.