More than 300,000 people have fled their homes as fighting worsens between security forces and militants.
Hosting a foreign exchange student improves global understanding, but fewer families are volunteering because of the poor economy.
Nations participating in the Nuclear Suppliers Group summit will debate whether the deal undermines efforts towards nuclear nonproliferation and sets a precedent for other would-be nuclear powers.
He's emphasized personal relationships with leaders such as Putin and Musharraf.
The unpopular leader announced Monday he would step down, avoiding the drive to impeach him.
Pakistan's unpopular president resigned Monday, leaving a divided government to pick a successor and face other mounting problems.
US officials say the system is merely a protection against rogue states like Iran.