"Our concerns about the ISI and its contacts with some of these elements has been well known. It has been a part of our conversation with Pakistan for some time. Pakistan itself has commented publicly about this," State Department spokesman P J Crowley told reporters at his daily news conference.
"But we are focused on the decisive action that Pakistan must take to deal with the threat that is within its borders and has, in the last year or two, become clear that it's a threat to Pakistan, and we are satisfied with the aggressive action that Pakistan has taken in response," he said.
"We want to see that aggressive action continues. Where we have concerns about ongoing contacts, we will not hesitate to raise them with Pakistan," Crowley said in response to a question.
"Ultimately, as we seek a military and political solution to this challenge, it will take the leadership of Afghanistan, as was outlined last week in the Kabul conference.
But Pakistan will have to play a role in this, as will other countries in the region," he noted.
Crowley argued that the revelation made by WikiLeaks that ISI has contacts with terrorist networks is not new.
"We think that while there might be granularity in some of the material that’s been released, and again we emphasize that we think this release has done damage to our national security, there’s no startling revelations in these documents," he said.
"Pakistan’s relationship with elements that morphed into the Taliban go back to the Soviet occupation were very well known.
They're known to the United States, they're known to India, and they're known to Afghanistan," Crowley said.