This is a 1991 research paper from the Directorate of Intelligence in re to Project Babylon: The Iraqi Supergun
Yes, cost the English Inventor-Developer-Promoter his life…assassinated by ???
( put your favourite “usual suspect/ conspiracy theory” here).
100% correct, Dr. V., and a fine group they are, with the prime suspect being a 3-man hit team from Mossad to the CIA, Iran and even Hussein, who may have thought Bull a Western agent.
This thread also has some info on Project Babylon: