Pakistanis gather at the site of Sunday's car bombing in Karachi, Pakistan, Monday, March 4, 2013. Members of Pakistan's Shiite community were digging Monday through the rubble of the massive car bombing in Karachi looking for loved ones. (AP Photo/Shakil Adil)
** FILE ** The commander of a tribal militia, Maulvi Faqir Mohammed center, flanked by his bodyguards, speaks to journalists at Wana, the main town of Pakistan's tribal region of South Waziristan, along the Afghan border. (Associated Press)
**FILE** A Pakistani soldier of Pakistan's paramilitary force is silhouetted at the Gwadar port, 700 kilometers (435 miles) from Karachi, Pakistan, on Feb. 6, 2007. (Associated Press)
A Pakistani Shiite Muslim woman weeps on Sunday, Feb. 17, 2013, as she and other family member survey a market damaged in Saturday's deadly bombing in Quetta, Pakistan. (AP Photo/Arshad Butt)
Pakistani Ambassador Sherry Rehman insists that her government has never approved of drone strikes, not even with a private "wink and nod." (Associated Press)