KARACHI: Two key opposition parties, the Pakistan Tehreek-i-Insaf (PTI) and Grand Democratic Alliance (GDA), chose to stay away from the multiparty conference due to the participation of the ruling Pakistan Peoples Party. In their separate statements, the PTI and GDA held the PPP equally responsible to approve the proposal to dig additional six canals over the Indus River. GDA Secretary General Dr Safdar Abbasi and PTI’s provincial president Haleem Adil Sheikh said that their parties had cordial relations with the JUI-F but they couldn’t become part of any platform where the PPP was invited to discuss strategy against ‘anti-Sindh’ plans of the federal government.