Reuters story by Adam Entous, reporter and Doina Chiacu, editor.
Haqqani faction in the tribal border region of North Waziristan has been linked by the Pentagon to political violence in May.
"Suicide bombers carrying rockets and grenades launched a brazen predawn attack on the base on May 19, killing an American contractor and wounding nine U.S. troops. About a dozen militants, many wearing suicide vests packed with explosives, were killed, the Pentagon said at the time.
A day earlier, a suicide bomber attacked a military convoy in Kabul, killing 12 Afghan civilians and six foreign troops."
The U.S. is insisting Islamabad place more pressure on its military to seek out members of Haqqani and prevent future attacks.
A dimension of complexity presents itself to Pakistan's leadership as future negotiations might be undermined by military missions against Taliban factions.
"But there are strategic reasons for Pakistan's hesitancy to attack the Haqqanis.
Pakistan sees the group as a strategic asset that will give it influence in any peace settlement in Afghanistan so Islamabad will want those militants on its side."
Insistence by the U.S. with Pakistan follows the May 1 attempted bombing in New York City's Times Square.
Warfare continues to become more professional and dehumanized every day.
The purpose of Extraordinary Edition is being revisited for winter, headed into 2013. U.S. foreign policy, Central Asia and the Middle East remain key focal points. Economics and culture on your front doorstep are coming into focus here.