Barenblatt's book also says the Japanese military considered targeting the US with bioweapons at the end of World War II. It tells of a plan in which a plane from a specially equipped submarine would spray San Diego and saboteurs were to land secretly to poison California's water supply.
Although the US was considered a target and US servicemen were tested on by Japanese scientists, many involved with development of the biowar program were not later convicted of war crimes.
Barenblatt notes that former US General Douglas MacArthur, in charge of post-war Japan, said the research uncovered by the Japanese scientists could be useful.
"Request for exemption [from prosecution] of Unit 731 members. Information about vivisection useful," MacArthur explained in a 1947 radio message to a combined military-State Department group in Washington that supervised Japan occupation policy.
"Details from this period were suppressed during the Cold War. The US government cut a secret deal with these Japanese doctors, giving them immunity from prosecution in exchange for their medical data," said Chang in an e-mail exchange.
Said Barenblatt, "What the US did in making the deal with top doctors is unconscionable. As far as we know, no one in the US government raised any more objection to it."



