FILE - In this Monday, Dec. 3, 2012 file photo, Pakistani madrassa students, gather around the coffin of Maulana Mohammad Ismail, a teacher at a Sunni seminary who was killed by unknown

 

              FILE - In this Monday, Dec. 3, 2012 file photo, Pakistani madrassa students, gather around the coffin of Maulana Mohammad Ismail, a teacher at a Sunni seminary who was killed by unknown
FILE - In this Monday, Dec. 3, 2012 file photo, Pakistani madrassa students, gather around the coffin of Maulana Mohammad Ismail, a teacher at a Sunni seminary who was killed by unknown gunmen, during his funeral procession in Karachi, Pakistan. Pakistan's largest city is suffering one of its most violent years in history, and concern is growing that the chaos is giving greater cover for the Taliban to operate, and undermining the country's economic epicenter. (AP Photo/Shakil Adil)