Gareth Porter argues that "the analysis of Khamenei's fatwa has been flawed", not only because the role of the "guardian jurist" in the Iranian political-legal system is not totally understood but also because the history of the fatwa is ignored. He also believes that to understand Iranian policy toward nuclear weapons, one should refer to the "historical episode during its eight-year war with Iraq", which explains why Iran never used chemical weapons against Iraq seeking revenge for Iraqis attacks killing 20,000 Iranians and severely injured 100,000 more. Porter argues that fact to suggest strongly that Iran has sincerely made a "deep-rooted" ban on developing chemical and nuclear weapons. In an interview with Porter, Mohsen Rafighdoost, the eight-year wartime minister of the Islamic Revolutionary Guard Corps, disclosed how Khomeini had opposed his proposal for beginning working on both nuclear and chemical weapons by a fatwa. The details on when and how it was issues had never been made public.