Pakistan Top StoriesPTI to show political strength today in KarachiTNT DeskSeptember 21, 2014September 21, 2014 by TNT DeskSeptember 21, 2014September 21, 2014 KARACHI: Pakistan Tehreek-e-Insaf (PTI) chief Imran Khan will show its party strength in Karachi on Sunday (today) in a congregation....