In 1969, US President Richard Nixon ended all offensive aspects of the US bio-weapons program — the first category of weapons prohibited by an international treaty. In 1975, the US ratified both the 1925 Geneva Protocol and the 1972 Biological Weapons Convention (BWC) — the international treaties outlawing biological warfare. But many reports from
国际研究人员团队关注美国努力制造生物武器
现在是时候让美国停止躲避尴尬的问题并提供一些明确的答案。