Secretary of State Hillary Clinton visited Islamabad days after the Abbottabad operation to tell Pakistan the way forward for both countries was to step up joint efforts against terrorism.

"The United States and Pakistan have worked together to kill or capture many of these terrorists here on Pakistani soil," said Clinton. "This could not have been done without close cooperation between our governments, our militaries, and our intelligence agencies. But we both recognize there is still much more work required and it is urgent."

The powerful Pakistani military came under intense pressure at home for failing to detect both the presence of the al-Qaida leader and the U.S. raid that killed him.

In response, the Pakistani army ordered U.S. military trainers to leave Pakistan and tightened visa restrictions on U.S. staff. American officials in turn linked billions of dollars of financial assistance to improved cooperation in the fight against terrorism.

In late November, the relationship suffered another blow when NATO air strikes on Pakistani border posts killed 24 soldiers. Pakistan closed its borders to supplies for the U.S.-led international forces in Afghanistan, expelled American personnel from an air base used for drone attacks, and boycotted an international conference held in Germany to discuss the future of Afghanistan.

Foreign Minister Hina Rabbani Khar said parliament is now reviewing the country’s cooperation with the United States.