operation unk ( unk ) was a joint military offensive Military_operation conducted Action by the pakistan armed forces against various militant groups , including the tehrik-i-taliban pakistan ( ttp ) , the islamic movement of uzbekistan , the east turkestan islamic movement , lashkar-e-jhangvi , al-qaeda , jundallah and the haqqani network .

the pns mehran attack Attack was an unk by tehrik-i-taliban pakistan ( ttp ) and al qaeda which took place Process_start on 22 may 2011 , at pns mehran , the headquarters of the pakistan navy 's naval air arm and the most populous pakistani military installation .