by Ikram Junaidi in Dawn, December 9th, 2023ISLAMABAD: Former finance minister Shaukat Tarin, a key figure in the Pakistan Tehreek-i-Insaf, announced on Friday that he had decided to quit the PTI and politics for good, marking another setback for the Imran Khan-led party ahead of the general election. Mr Tarin, who was one of the heads of PTI’s manifesto committees, said he has also decided to resign as a member of the Senate. In a…