"Pakistan continues to harbour and host insurgents and other extremists in the Afghan border regions. Making matters worse, Pakistan's intelligence service is known to cooperate with the Taliban as it works to undermine Afghanistan's stability," Congresswoman Ilena Ros-Lehtinen said during a Congressional hearing.
"Even more concerning, Pakistan's nuclear weapons stockpile is reportedly growing faster than any other in the world and is notoriously insecure," she said, chairing a Congressional hearing on Afghanistan and Pakistan.
Congressman Ted Deutch said US lawmakers continue to have long-standing concerns over the ability of insurgents to operate in Pakistan and across the border into Afghanistan.
"I've been encouraged by Pakistan's military operations in North Waziristan. Even the most skeptical among us have to acknowledge that it has disrupted operations emanating from the North Waziristan agency, especially for the Pakistani Taliban.
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"The question is, can Pakistan rid its country of terrorism without going after terrorists wholesale. And despite the mistrust and tensions, we need cooperation from Pakistani security services, as well as strong communication with Pakistan's civilian leadership," Deutch said.
He said the Congress authorised USD 7.5 billion via the Kerry-Lugar-Berman bill to assist in strengthening Pakistan civilian institutions.
In his testimony, Deputy Special Representative of State for Af-Pak Jarret Blanc said that the US-Pak bilateral relationship is full of both opportunity and challenges.
"A stable, prosperous Pakistan that plays a constructive role in the region is in both our countries' interests, and has an acute effect on the region," he said, adding Pakistan is a complex democracy, representing 190 million people and grappling with substantial security challenges.