Al-Qaeda Besieges Pakistan Military

ISLAMABAD - The brazen al-Qaeda-linked attack on the Pakistan navy's Mehran air base in the southern port city of Karachi on Sunday night marks the violent beginning of an internal ideological struggle between Islamist elements in the Pakistani armed forces and their secular and liberal top brass.

More than 10 heavily armed militants attacked the base from three sides, blowing up several sensitive aircraft including a United States-manufactured surveillance plane. At least 20 security personnel are known to have been killed and as of late Monday morning the militants were still holding hostages in the facility.