Pakistani truckers who carry supplies to NATO troops in Afghanistan chant slogans during a protest in Karachi, Pakistan, on Wednesday, Jan. 9, 2013. The truckers have gone on strike in northwest Pakistan to protest lower pay, officials said. (AP Photo/Shakil Adil)

Photo by: Shakil Adil

Pakistani truckers who carry supplies to NATO troops in Afghanistan chant slogans during a protest in Karachi, Pakistan, on Wednesday, Jan. 9, 2013. The truckers have gone on strike in northwest Pakistan to protest lower pay, officials said. (AP Photo/Shakil Adil)