therefore, while timur bakhtiar and hassan pakrovan.each of them did not hold the post of president for four more years . nasiri's presidency lasted for 14 years. this was the most violent era of savak, and it led to the publication of various reports by international monitors on the violation of human rights by savak. the story of human rights violations goes back to the tortures of sevak. shakanjje in reality from the very beginning and under the supervision of timur bakhtiar , he was a part of savak's work process. at that time , torture methods were still simple. the main torture was wire whips, sticks or fists, which was carried out by sareng zeibai, a member of the baha'i sect, and mustafa amjadi, a famous savak interrogator. but during hassan pakrovan's period, mossad advisors taught new methods of interrogation, which were more complicated. these methods were a combination of physical torture plus mental torture. in terms of intelligence, our relationship with the mossad was so broad that even the mossad agents trained savako, w