ISLAMABAD: Former National Assembly speaker and PTI MNA Asad Qaiser on Friday termed the Inter-Services Public Relations’ (ISPR) demand for an apology from PTI founder Imran Khan for the events of May 9 as “unconstitutional”. ISPR Director General (DG) Maj-Gen Ahmed Sharif on May 7 had said that any dialogue with the PTI could happen only if it “earnestly apologises publicly in …