ISLAMABAD, Pakistan — The Obama administration was delivering a blunt warning Thursday that the United States will do what it must to go after militants in Pakistan and Afghanistan, whether Pakistan helps or not.
U.S. Secretary of State Hillary Rodham Clinton led an unusually large U.S. delegation for two days of talks with civilian and military leaders who have resisted previous U.S. demands to take a harder tack against militants who attack American soldiers and interests in Afghanistan.
The large U.S. contingent was meant to display unity among the various U.S. agencies, including the CIA, Pentagon and State Department, with an interest in Pakistan.
CIA chief David Petraeus and Joint Chiefs of Staff Chairman Gen. Martin Dempsey joined Clinton, who said the team would "push Pakistan very hard."
Clinton arrived in Islamabad from Afghanistan, where she told Pakistan it must be part of the solution to the Afghan conflict. She said the U.S. expects the Pakistani government, military and intelligence services to take the lead in fighting Pakistan-based militants and also in encouraging Afghan militants to reconcile.
"Our message is very clear," Clinton said. "We're going to be fighting, we are going to be talking and we are going to be building ... and they can either be helping or hindering, but we are not going to stop."
The meetings were expected to focus on the recurrent U.S. demand that Pakistan launch its own offensive against a lethal Taliban affiliate known as the Haqqani network. It operates on both sides of the Afghanistan-Pakistan border; U.S. officials claim Pakistan either tolerates or supports the group's activities.
U.S. military leaders have told the Pakistanis that if Islamabad does not act against the Haqqanis, the U.S. will.
"We must send a clear, unequivocal message to the government and people of Pakistan that they must be part of the solution, and that means ridding their own country of terrorists who kill their own people and who cross the border to kill people in Afghanistan," Clinton said.
Pakistan has deployed 170,000 soldiers to its eastern border with Afghanistan and more than 3,000 soldiers have died in battles with militants. So Pakistani leaders bristle at U.S. criticism that they have not done enough or that they play a double game — fighting militants in some areas, supporting them in others where they might be useful proxies in a future conflict with India.
A new offensive unleashed in recent days by the U.S.-led coalition against the Haqqani network in Afghanistan has added a sense of urgency to the talks in Pakistan.
Gen. John Allen, the top U.S. and NATO commander in Afghanistan, described the offensive during an interview Wednesday with The Associated Press as a "high intensity sensitive operation." He would not give a precise location or other details.
For more than three decades, the Haqqani network, led by patriarch Jalaluddin Haqqani, has maintained a headquarters in Pakistan's Miran Shah district of North Waziristan. The United States has had some recent successes killing at least two top Haqqani commanders in drone attacks.
Senior U.S. officials said the CIA was given a clearer green light to go after the Taliban affiliate in its Pakistani stronghold after the attack on a military base in Wardak, Afghanistan, that wounded 77 American soldiers. The Sept. 10 attack, blamed on the Haqqanis, helped convince Clinton that the U.S. should take decisive action against the network, two officials said.
Clinton and other U.S. officials had worried that CIA pressure on the network, primarily through drone strikes, would make its leaders less likely to support peace efforts between the Afghan government and the Taliban. Washington has had contact with some within the Haqqani network, including Ibrahim Haqqani, the brother of Jalaluddin, according to several Afghan and U.S. officials.
That same worry has held up an expected U.S. announcement that the Haqqani network will be placed on a list of terrorist groups subject to U.S. punishment. That move is now expected within a few weeks, two officials said. The officials spoke on condition of anonymity because the discussions are not complete.
The U.S. and NATO consider the Taliban affiliate to be the single greatest enemy in Afghanistan, and they accuse Pakistan of providing the group safe havens. There are also recent allegations that Pakistan has sent rocket fire into Afghanistan to provide cover for insurgents crossing the border.
Pakistan has denied aiding the Haqqanis. An increasingly angry Pakistani military has refused to carry out an offensive in the North Waziristan tribal region, saying it would unleash a tribal-wide war that Pakistan could not contain.
U.S. officials in Washington and elsewhere say the broader message for the meeting is that the U.S. still wants to have a strategic relationship with Pakistan. The gathering is also meant to dispel any mixed messages from U.S. officials.
Dempsey's predecessor as Joint Chiefs chairman, now-retired Adm. Mike Mullen, angered Pakistan and took U.S. colleagues by surprise when he told Congress last month that Pakistan's spy agency supported and encouraged attacks by the Haqqani network militants, including the massive truck bombing in Wardak.
He told lawmakers that the network "acts as a veritable arm" of Islamabad's Inter-Services Intelligence agency, the ISI, and said Pakistan is "exporting violence" and threatening any success in Afghanistan.
Mullen, who retired at the end of September, struggled to build relations with Pakistan during his four-year tenure, but became increasingly angry in recent months as the Haqqani attacks grew more aggressive and brazen.
Mullen's accusations complicated the already difficult American relationship with Pakistan, which hit its lowest point in years following the U.S. military raid inside Pakistan that killed Osama bin Laden in May.
Associated Press writers Kathy Gannon, and Adam Goldman and Anne Gearan in Washington contributed to this report.