Images from Pakistan

Families sit at the back of a van with their belongings while fleeing a military offensive against the Pakistani Taliban, as they enter Bannu in Khyber Pakhtunkhwa province, Jan. 22, 2014.

Police walk along a road to disperse residents during a protest against a search operation after the killings of three polio vaccination workers on Tuesday, in Karachi, Jan. 22, 2014.

Relatives of a female polio vaccination worker, who was killed by gunmen, mourn outside a morgue in the Jinnah Post Graduate Medical Center in Karachi, Jan. 21, 2014.

Supporters of Pakistan's People's Party rally to condemn killings of polio workers, in Karachi, Jan. 22, 2014.

Relatives and mourners of Shi'ite pilgrims who were killed in a Tuesday bomb blast, protest sitting next to their bodies, in Quetta, Jan. 22, 2014.

Shi'ite Muslims sit beside the covered bodies of victims who were killed in Tuesday's bomb attack on a bus, during a protest in Quetta, Jan. 22, 2014.

People look at the wreckage of a passenger bus destroyed in a bomb blast in the Mastong district, near Quetta, Jan. 21, 2014.