LAHORE: Following the brazen attack on a Peshawar mosque on Monday, calls for harmony and national unity have once again echoed in country’s legislative houses.The last time we all heard such calls and voices was more than eight years ago when six cold-blooded foreign terrorists had massacred 149 people, including 132 innocent kids, at Peshawar’s Army Public School on December 16, 2014. Research shows that just a week after the Army Public School tragedy, all Pakistani political parties...