
Former Pakistani Prime Minister Nawaz Sharif, who will lead the nation's incoming government, addresses political-party workers in Lahore, Pakistan, on Monday, May 20, 2013. (AP Photo/K.M. Chaudary)

Former Pakistani Prime Minister Nawaz Sharif, who will lead the nation's incoming government, addresses political-party workers in Lahore, Pakistan, on Monday, May 20, 2013. (AP Photo/K.M. Chaudary)

** FILE ** In this undated image from video seized from the walled compound of al Qaeda leader Osama bin Laden in Abbottabad, Pakistan, and released on Saturday, May 7, 2011, by the U.S. Department of Defense, a man whom the American government identified as Osama bin Laden watches television with an image of President Obama on the screen. Bin Laden was killed by U.S. troops. (AP Photo/U.S. Department of Defense)

**FILE** Ruling Pakistan People's Party leader and Information Minister Sherry Rehman (left) makes victory signs as she and her colleagues Farooq Naik (right) and Asfandyar Wali (center back) leaves from main office of election commission after filing nomination papers of Asif Ali Zardari for presidential election on Aug. 26, 2008, in Islamabad, Pakistan. (Associated Press)

**FILE** Ruling Pakistan People's Party leader and Information Minister Sherry Rehman (left) makes victory signs as she and her colleagues Farooq Naik (right) and Asfandyar Wali (center back) leaves from main office of election commission after filing nomination papers of Asif Ali Zardari for presidential election on Aug. 26, 2008, in Islamabad, Pakistan. (Associated Press)

Pakistan Muslim League party supporters celebrate their party's victory in the parliamentary election in Lahore, Pakistan, on Sunday. Nawaz Sharif is the likely next prime minister. (Associated Press)

A Pakistani man walks past posters of former Prime Minister Nawaz Sharif, the Pakistan Muslim League-N party chief, on display on the party's office building in Lahore, Pakistan, on Sunday, May 12, 2013. (AP Photo/Anjum Naveed)

A Pakistani man walks past posters of former Prime Minister Nawaz Sharif, the Pakistan Muslim League-N party chief, on display on the party's office building in Lahore, Pakistan, on Sunday, May 12, 2013. (AP Photo/Anjum Naveed)

A Pakistani army soldier escorts election staff carrying ballots for the next day's elections in Islamabad, Pakistan, on May 10, 2013. (Associated Press)