PakistanMQM walks out of NA session over Karachi unrestMirza HassanNovember 13, 2012November 13, 2012 by Mirza HassanNovember 13, 2012November 13, 2012 Islamabad: Prominent coalition partner of the government, Muttahida Qaumi Movement, on Tuesday walked out of the National Assembly in protest against the unrest and instability...