U.S. Secretary of State Hillary Clinton said Pakistan must take stronger measures against Islamic extremists operating from its soil, pointing to their destabilizing role in Afghanistan.
Clinton arrived in Islamabad from Afghanistan to join a U.S. delegation Thursday, which includes CIA director David Petraeus and Gen. Martin Dempsey, chairman of the Joint Chiefs of Staff.
The delegation hopes to present a unified voice from U.S. agencies with an interest in Pakistan, including the State Department, Pentagon, CIA, the Associated Press reported.
The U.S. is particularly miffed with Pakistan's refusal to crack down on the Haqqani terror network, embedded in the country's rugged tribal region.
The network poses the biggest threat to U.S. troops in Afghanistan. Pakistani government officials deny U.S. allegations that its military spy agency, the ISI, provides support for the terror group.
"We should be able to agree that for too long extremists have been able to operate here in Pakistan and from Pakistani soil," Clinton told reporters during a joint press conference with Pakistani Foreign Minister Hina Rabbani Khar.
"We respect the challenges Pakistan faces, and we respect the work we are doing together, including our cooperation against al Qaeda," she said.
She noted that terrorism is a shared challenge and the two countries should be working together to "root out all the extremists who threaten us, including the Taliban and Haqqani network."
"No one who targets innocent civilians, whether they be Pakistanis, Afghans, Americans or anyone else, should be tolerated and protected," Clinton said.