Pakistan's war with the Taliban

Pakistani army troops patrol through a registration camp set up for internally displaced people who fled Waziristan due to fierce fighting between security forces and militants, in Dera Ismail Khan on Wednesday, Oct. 21, 2009, in Pakistan

Pakistani soldiers fire an anti-tank gun during a battle between Pakistani security forces and Taliban in the South Waziristan region in this image taken from a video grab released by the Pakistani military on October 21, 2009.

Pakistani soldiers point their weapons during a battle between Pakistani security forces and Taliban in the South Waziristan region in this image taken from a video grab released by the Pakistani military on October 21, 2009.

A Pakistani soldier mans a machine gun during a battle between Pakistani security forces and Taliban in the South Waziristan region in this image taken from a video grab released by the Pakistani military on October 21, 2009.

Pakistani soldiers display arms and ammunition which they say were recovered from a cave in the South Waziristan region in this image taken from a video released by the Pakistani military on October 21, 2009.

A Pakistani soldier uses a metal detector to search for mines in the South Waziristan region in this image taken from a video released by the Pakistani military on October 21, 2009.

A Pakistani soldier carries a weapon which the military say was recovered from a cave in the South Waziristan region in this image taken from a video released by the Pakistani military on October 21, 2009.

Pakistani soldiers prepare to fire an anti-tank gun during a battle between Pakistani security forces and Taliban in the South Waziristan region in this image taken from a video released by the Pakistani military on October 21, 2009. Pakistani helicopter gunships attacked Taliban bases near the Afghan border on October 21, 2009 as the army urged NATO forces to seal the frontier to stem cross-border movement of militants. Pakistani forces launched an offensive to wrest control of the lawless South Waziristan region on October 17, 2009 after militants rocked the country with a string of bomb and suicide attacks in recent weeks, killing more than 150 people.