American Secretary of State Rex Tillerson has increased pressure on Pakistan over its perceived backing for the Taliban in Afghanistan.
Pakistan denies sheltering the Taliban, but Tillerson suggested it could lose US privileges if the government failed "to change their posture".
He was speaking a day after President Donald Trump unveiled a new strategy, vowing to commit US forces to back Afghan forces fighting the insurgents.
The US is a key ally of Pakistan.
The country enjoys a special status as a non-Nato alliance partner and receives billions of dollars in aid.