Director John Davidson reviews the science and motives behind the attacks on an ancient class of medicines whose use has decided the fates of nations. Director John Davidson reviews the science and motives behind the attacks on an ancient class of medicines whose use has decided the fates of nations. Director John Davidson reviews the science and motives behind the attacks on an ancient class of medicines whose use has decided the fates of nations. Director John Davidson reviews the science and motives behind the attacks on an ancient class of medicines whose use has decided the fates of nations.