LONDON – On November 25th 1969 in the midst of the war in Vietnam, President Richard Nixon, besieged by protests that he was a war monger, threw out a sop to public opinion. The U.S., he announced, had decided to renounce the possession and use of lethal and incapacitating biological weapons. He declared that the government would destroy its stockpile of biological weapons. “These important decisions”, said Nixon, “have been taken as an initiative towards peace. Mankind already carries in its own hands too many of the seeds of its own destruction.” Privately Nixon was convinced that they had little military utility for the U.S. whilst at the same time he feared that, if the big powers continued to depend on biological weapons, one day a “rogue” state might one day get its hands on the knowledge of how to make them and use them against American cities. Sending the...